TH-8201 电子式桌上型万能材料试验机1吨桌上型拉力机 微电脑拉力试验机

技术规格:

一、 主要技术参数

1、 最大试验力:1KN、2KN、3KN、5KN、10KN 选一个

2、 度等级:优于1级;

3、 负荷测量范围:0.2%—100%FS;

4、 试验力示值允许误差极限:示值的±1%以内;

5、 试验力示值分辨率:最大试验力的1/±100000

6、 采样频率:400/秒;

7、 变形测量范围:0.2%—100%FS;

8、 变形示值误差极限:示值的±0.50%以内;

9、 变形分辨力:最大变形的1/80000

10、 位移示值误差极限:示值的±0.5%以内;

11、 位移分辨力:0.1µm

12、 位移速度调节范围:10-350mm/min

13、 位移速率控制精度:设定值的±1.0%以内;

14、 试验宽度:400×400mm

15、 拉伸空间距离:1000mm

16、 主机外型尺寸(长×宽×高):81465×1530mm

17、 使用电源:单相220V 50Hz

18、 机台重量:约200kg

二、 控制及数据处理软件功能特色:

1、 本测控系统核心器件采用进口型超高精度64位AD,采样速率可达400/秒; 

2、 采用5.1英寸高清晰大屏幕蓝色LCD显示屏,直接输入试验参数,全中文操作界面层层提示,用户无需操作手册即可轻松操作。

3、 控制方式:定荷重、定位移、定时间等控制方式可选;

4、 自动换档:根据负荷大小自动切换到适当的量程,以确保测量数据的度;

5、 单位切换:力量单位:(kgNlb)、位移单位:(mmmin

6、 结果输出:可选配微型打印机,打印测试结果,并具取点即打印功能;

7、 其他功能:单次试验,手动10点统计,并自动计算平均值,断裂值(适做剥离、撕裂试验),最多可储存5组

8、 安全保护:超过最大负荷的210%时,自动实现安全保护;

随机标准配件:

1、 荷重传感器:美国AMCELLDS高精度荷重元,1KN、2KN、3KN、5KN、10KN   选一个

2、 位移感应系统:日本光电编码器感应全程位移编码器 一套;

3、 测控系统:THM2000 64位测控显示器 一套;

4、 动力系统:台湾AC马达及台达变频器控制系统 一套;

5、 传动系统:台湾VGM蜗轮减速箱及台湾精密丝杆传动 一套

6、 测试治具:依客户试样制定测试治具 一套;

该公司产品分类: 工程塑料试验机 转轴扭力试验机 电线扭转试验机 U型拖链试验机 电线弯曲试验机 纸箱抗压试验机 电池片剥离试验机 常用测试夹具 医疗制品检测设备 纸品包装运输检测设备 胶粘制品检测设备 太阳能光伏检测设备 电线电缆检测设备 橡塑制品检测设备 金属制品检测设备 动态疲劳寿命试验机 液压万能材料试验机 电子万能材料试验机 万能材料试验机 万能材料试验机

TXDL-1000电流发生器/交流电流发生器/大电流发生器/升流器

TXDL-1000大电流发生器主要技术参数 本装置是我公司自行研制开发的测试设备,它集国内外同类产品的优点于一身,主要用于一次母线保护及各种电流互感器的变比等测试项目,由于采用低功耗、大容量的自藕调压器和高导磁率铁芯制作的变流器,具有输出功率大,体积小,重量轻等优点,被广泛用于电力、铁路、石化、冶金和矿山等企业的科研、生产和电气试验现场。主要功能

  • 采用美观大方的PVC面板
  • 内置数显电流表便于直接读数 (一次电流,二次电流,)
  • 测量精度高???????? 0.2级
  • 功率大、体积小、带负载能力强
  • 测试精度高
  • 加计时秒表 主要技术指标 输入电压: AC220V ±10% 输出电流: AC0~1000A  外形尺寸: 360×320×350

120/121120/121威世(vishay)称重传感器

。技术参数:120、121。产品尺寸:120、121。基本配件:M1001系列。模块配件:M1002/M1004

。汽车衡、轨道衡、轴重计    配料秤、筒槽计量

该公司产品分类: AMCELL称重传感器 ZEMIC传感器 美国TEDEA称重传感器 美国CELTRON称重传感器 德国HBM称重传感器 奥豪斯仪器

HFKLT2-1 HFKLT2-Ⅰ双向拉绳开关HFKLT2-1 HFKLT2-Ⅰ

双向拉绳开关系我公司组织科研人员开发研制的新一代产品,可用于胶带运输机现场。当发生紧急事故时,便启动本机使运输机立即停机防止事故的扩大。本产品由于安装方便、开关性能,在胶带运输机中得到广泛应用。

VB300-SR221立式投影仪

主要性能及技术参数:*整体外壳*小工件快速测量的理想工具*可X、Y方向手动移动的测量工作台*手动对焦距离4”(100mm)*最大被测工件重量5Kg
    
●镜头工作距离  10倍  -3.1”(80mm)  20倍  -3” (76mm)  25倍  -2.4”(62mm)  50倍  -2” (50mm)  100倍 -1.6”(41mm)●轮廓照明---大功率,冷却风扇,钨-卤素、可切换的强/弱照明,黄/绿滤光镜头。●表面照明---同轴可调● 测量系统配置:0.001mm分辨率的Heidenhain光栅尺,Quadra-chek读数系统●工作台尺寸   工作台台面:10.5” x 6.9” (270 x 175mm)   玻璃板:       8” x 4.5”   (200 x 115mm)   测量范围:    6” x 2.8”   (150 x 70mm)●镜头的可选范围: 10×, 20×, 25×, 31.25×, 50×, 100×, 单镜头座.

人白介素-1(IL-1)酶免试剂盒(ELISA KIT)

rat anti – human interleukin 1人白介素-1(il-1)酶免试剂盒(elisa kit) collect sample – secretion package size: 96 determinations catalogue no.: qrct – 322101eia \ utl storage: 2 - 8 °c i. introduction producing of il-1 cell the il-1 is main to be produced by cell;in addition and almost allly there is cell, such as the t that b cell, nk the cell, outside educate cell, horniness cell, tree cell, star polygon cell, fiber cell, neutral grain cell, inside skin the cell and smooth muscle cell can all produce the il-1. although its amino acids is in proper order to only reach 26% of , however the il-1 cell of similar to il-1 the β is with the affinity that same to join together in α surface suffer, and develop the same biology function.the il-1 suffers the il-1 the r to almost exsits in all have the cell the il-1 r of the surface, each cell the number and does not wait, little then several ten( such as the t cell), much and then several thousand.special function that il-1 although not extensive used for the body research, its make it have the foreground of the person in the clinical application aspect to immune system.moreover, because of the il-1 too the various and pathologic process of the and machine, therefore study the il-1 repress the thing may also have the actual meaning.now already the gram outs the il-1 suffer the anti- the il-1 for activity for, that material can outside inside closing the il-1, is first kind than ideal to close the factor. ii. reagents materials provided with the kits : 􀂄 coated microtitration strips 96 wells. 􀂄 standard 0, 25, 50, 100, 250, 500 pg/ml, 1 ml/vial, lyophilized. 1 set. 􀂄 enzyme conjugate solution, 6 ml. 􀂄 chromogen solution a, 6 ml. 􀂄 chromogen solution b, 6 ml. 􀂄 stopping solution (1n hcl), 6 ml. 􀂄 wash concentrate,50 ml( x 20). materials required but not provided : 􀁺 precision pipettes: 0.10, 0.20, and 1.0 ml. 􀁺 disposable pipette tips. 􀁺 distilled water. 􀁺 vortex mixer or equivalent. 􀁺 absorbent paper or paper towels. 􀁺 microtiter plate shaker 􀁺 graph paper. 􀁺 a microtiter plate reader with a bandwidth of 10nm or less and an optical density range of 0-2 od or greater at 450 nm . - page 1- for informational use only ▪ do not use for performing assay ▪ refer to most current package in-sert accompanying testkit rat anti – human interleukin 1 collect sample – secretion package size: 96 determinations catalogue no.: qrct – 322101eia \ utl storage: 2 - 8 °c iii. storage of test kit and instrumentation unopened test kits should be stored at 2-8°c upon receipt and the microtiter plate should be kept in a sealed bag with desiccants to minimize exposure to damp air. opened test kits will remain stable until the expiration date shown, provided it is stored as described above. a microtiter plate reader with a bandwidth of 10nm or less and an optical density range of 0-2 od or greater at 450nm wavelength is acceptable for use in absorbance measurement. iv. assay procedure 1. secure the desired number of coated wells in the holder. 2. dispense 100 μl of standards and specimens into appropriate wells. 3. dispense 50 μl of enzyme conjugate reagent into each well. gently mix for 15 seconds. 4. incubate at 18-25 °c for 90 minutes. 5. remove the incubation mixture by emptying plate contents into a suitable waste container. 6. rinse and empty the microtiter wells 5 times with distilled or deionized water. (mix 50ml of washing buffer 20x with 950ml of distilled water.) 7. strike the wells sharply onto absorbent paper to remove residual water dr-oplets. 8. dispense 50 μl of color a and color b reagent into each well. gently mix for 5 seconds. 9. incubate at 18-25 °c for 15 minutes. 10. stop the reaction by adding 50 μl of stop solution to each well. 11. gently mix for 30 seconds. it is important to make sure that all the blue color changes to yellow color completely. 12. using a microtiter plate reader, read the optical density at 450 nm within 30 minute. v. important notes the wash procedure is critical. insufficient washing will result in poor precision and falsely elevated absorbance readings. it is recommended that if manual pipetting is used, no more than 32 wells be used for each assay run, since pipetting of all standards, specimens and controls should be completed within 3 minutes. a full plate of 96 wells may be used if automated pipetting is available. duplication of all standards and specimens, although not required, is recommended. vi. example of standard curve calculate the average absorbance values (a450) for each set of reference standards, control, and samples. construct a standard curve by plotting the mean absorbance obtained for each reference standard against its concentration on linear graph paper, with absorbance on the vertical (y) axis - page 2- for informational use only ▪ do not use for performing assay ▪ refer to most current package in-sert accompanying testkit rat anti – human interleukin 1 collect sample – secretion package size: 96 determinations catalogue no.: qrct – 322101eia \ utl storage: 2 - 8 °c and concentration on the horizontal (x) axis.using the mean absorbance value for each sample, determine the corresponding concentration of in from the standard curve. results of a typical standard run with optical density readings at 450nm shown in the y axis against concentrations shown in the x axis. this standard curve is for the purpose of illustration only, and should not be used to calculate unknowns. each user should obtain his or her own data and standard curve. vii. calculation of results the minimum detectable concentration of il1 in this assay is estimated to be 1.0pg/ml. viii. limitations of the procedure reliable and reproducible results will be obtained when the assay procedure is carried out with a complete understanding of the package in-sert instructions and with adherence to good laboratory practice. the wash procedure is critical. insufficient washing will result in poor precision and falsely elevated absorbance readings. the results obtained from the use of this kit should be used only as an adjunct to other diagnostic procedures and information available to the physician. - page 3-

人白介素-1(il-1)酶免试剂盒(elisa kit)

SV015IS5-4NLG变频器SV015IS5-4N

LG变频器全国代理LG变频器代理上海泽旭自动化设备有限公司      李灯华laingajsahldlkfjldkf G.AI

V004IC5-1 SV004iC5-1 SV008iC5-1

SV015iC5-1 SV004IC5-1-1F

SV004iC5-1-1F SV008iC5-1-1F SV015iC5-1-1F

SV004IG5-1 SV008IG5-1 SV015IG5-1

SV004IG5-4 SV008IG5-4 SV015IG5-4

SV022IG5-4 SV037IG5-4 SV040IG5-4

SV004IG5-2 SV008IG5-2 SV015IG5-2

SV022IG5-2 SV037IG5-2 SV040IG5-2

Re-cable 2M,SV-IG5 Re-cable

3M,SV-IG5 Re-cable 5M,SV-IG5

SV055IG5A-4 SV075IG5A-4

SV055IG5A-2 SV075IG5A-2 Re-cable

2M+LOADER SV008IS5-4N SV015IS5-

4N SV022IS5-4N SV037IS5-4N

SV055IS5-4N SV075IS5-4N

以上已经SV110IS5-4N SV150IS5-4N

SV185IS5-4N SV220IS5-4N

SV300IS5-4 SV370IS5-4 SV450IS5-4

SV550IS5-4 SV750IS5-4 SV008IS5-

2N SV015IS5-2N SV022IS5-2N

SV037IS5-2N SV055IS5-2N

SV075IS5-2N SV110IS5-2N

SV150IS5-2N SV185IS5-2N

SV220IS5-2N SV300IS5-2 SV370IS5

-2 SV450IS5-2 SV550IS5-2

SV055IP5-4N SV075IP5-4N

SV110IP5-4N SV150IP5-4N

SV165IP5-4N

SV220IP5-4N SV300IP5-4N LCD

Loader,SV-IS5 LED Loader,SV-IS5

SV150DBU-4 SV220DBU-4 Re-cable

2M,SV-IS5 Re-cable 3M,SV-IS6 Re

-cable 5M,SV-IS7 SUB-A CARD,SV-

IS5 SUB-B CARD,SV-IS5 SUB-C CARD,SV-IS5 RS485

CARD,SV-IS5 Modbus CARD,SV-IS5

Proflbus CARD,SV-IS5 Device Net,SV-IS5 MMC

CARD,SV-IS5 SV030IH-4CT SV037IH

-4CT SV045IH-4CT SV055IH-4CT

SV075IH-4CT SV090IH-4CT SV110IH

-4CT SV132IH-4CT SV160IH-4CT

SV220IH-4CT SV037IH-4VT SV045IH

-4VT SV055IH-4VT SV075IH-4VT

SV090IH-4VT SV110IH-4VT SV132IH

-4VT SV160IH-4VT SV200IH-4VT

SV280IH-5VT SV037DBH-4 SV075DBH

-4 RS485 CARD,SV-IH Modbus

CARD,SV-IH Proflbus CARD,SV-IH

SV055IV5-4DB SV075IV5-4DB

SV110IV5-4DB SV150IV5-4DB

SV185IV5-4DB SV220IV5-4DB

SV300IV5-4DB SV370IV5-4DB

GR400W200 GR400W160 SR400W200

SR600W130 SR1000W85 SR1200W60 以上已经发布SR2000W40 SR2400W30 SR3600W20  产品介绍:iG5系列(内置制动单元和

PID功能) iS5系列(内置PID功能,不

配控制面板) 004iC5-1LG变频器004iC5-1008iC5-1015iC5-1022iC5-1004iG5-1008iG5-1015iG5-1004iG5-2008iG5-2015iG5-2022iG5-2037iG5-2040iG5-2004iG5-4008IG5-4015iG5-4022iG5-4037iG5-4040iG5-4008iS5-2N015iS5-2N022iS5-2N037iS5-2N055iS5-2N075iS5-2N110iS5-2N150iS5-2N185iS5-2N220iS5-2N008iS5-4N015iS5-4N022iS5-4N037iS5-4N055iS5-4N075iS5-4N110iS5-4N150iS5-4N185iS5-4N220iS5-4N LCD Loader,SV-IS5  LED Loader,SV-IS5 SV150DBU-4 SV220DBU-4  Re-Cable 2M  IS5 Option  Re-Cable 3M  IS5 Option  Re-Cable 5M  IS5 Option Sub-A Card,IS5 Option Sub-B Card,IS5 Option Sub-C Card,IS5 Option RS485 Card,IS5 Option Modbus Card,IS5 Option Profibus Card,IS5 Option Device Net Card,IS5 Option MMC Card,IS5 Option 037iH-4VT045iH-4VT055iH-4VT075iH-4VT090iH-4VT110iH-4VT132iH-4VT160iH-4VT185iH-4VT280iH-4VT030iH-4CT037iH-4CT045iH-4CT055iH-4CT075iH-4CT090iH-4CT110iH-4CT132iH-4CT160iH-4CT220iH-4CT055iV5-4DB075iV5-4DB110iV5-4DB150iV5-4DB185iV5-4DB220iV5-4DB300iV5-4DB370iV5-4DB450iV5-4DB550iV5-4DB750iV5-4DBK7M-DR10SK7M-DR20SK7M-DR30SK7M-DR40SK7M-DR60SK7M-DR10S/DCK7M-DR20S/DCK7M-DR30S/DCK7M-DR40S/DCK7M-DR60S/DCK7M-DT10SK7M-DT20SK7M-DT30SK7M-DT40SK7M-DT60SG7E-DR10AG7E-DT10AG7F-ADHAG7F-AD2AG7L-CUECG7L-CUEBG7F-AT2AG7F-RTCAG7M-M256K3P-07ASK3P-07BSK3P-07CSGM6-PDFAGM6-PDFBGM6-PAFAGM6-PAFBGM6-PAFCG6I--D21AG6I--D22AG6I--D24AG6I--D22BG6I--D24BG6I--A11AG6I--A21AG6Q-RY1AG6Q-RY2AG6Q-TR2AG6Q-TR2BG6Q-TR4AG6Q-TR4BG6Q-SS1AGM6-B04MGM6-B06MGM6-B08MGM6-B12MG6F-AD2AG6F-DA2VG6F-DA2IG6F-HSCAG6F-POPAG6F-PP1DG6F-PP2DG6F-PP3DG6F-PP1OG6F-PP2OG6F-PP3OG6F-TC2AG6F-CUEBG6F-CUECG6L-FUEAG6L-RBEAGOL-SMIAGOL-SMQAGOL-SMHA

GBT6671睿博联塑料管材划线器(可做切片试验)

 

GBT6671塑料管材划线器(可做切片试验)

一、塑料管材划线器概述:

   纵向回缩率是塑料管材产品性能优劣的一项重要指标。它反映了塑料管材产品在热影响下管材沿纵向塑性变化的稳定性能。它的测定对提高产品在使用过程中对气温的变化、日照以及其它热源影响的承受能力,以及提高产品的使用年限都有着重要的意义。但由于纵向回缩率测定方法的多样性,我们在检测当中往往由于操作不当、或不注意要领,从而影响了检测的准确度。

   测定热塑性塑料管材纵向回缩率的试验方法有两种,一种是在液体中(方法A),另一种是在空气中(方法B)。是将规定长度的试样,置于给定温度下的加热介质中保持一定的时间,测量加热前后试样标线间的距离.以相对原始长度的长度变化百分率来表示管材的纵向回缩率。

   划线器就是在试样上划两条相距100mm的圆周标线,使其一标线距任一端至少10mm。符合国标GB/T 6671-2001《热塑性塑料管材纵向回缩率的测定》试验规程。适用于直径小于等于400mm的试样,大于400mm的试样可做切片试验。

二、塑料管材划线器技术参数:

1、划线距离:100mm(松动螺丝可随意调节)

2、划线笔:任意(可是铅笔、记号笔、油漆笔等)

3、试样直径:0-400mm

4、外形尺寸:550×420×250mm

5、重量:15KG

三、塑料管材划线器试验方法:

1、把划线器放在合适的试验场所,调整地脚螺丝使划线器处于平衡位置不晃动。

2、截取试样使试样长度为200±20mm,再把试样放在划线器的四个转动轮中央。

3、把划线笔(可是铅笔、记号笔、油漆笔等)装在划线器上面的固定架上面,调整划线笔位置,使两笔处于同一形态,并调整划线笔笔尖位置,使两笔尖之间的距离为100mm(保证两标线间距为100mm)。

4、轻轻转动手轮,这时试样随转动轮转动,试样转动一圈之后,划线笔就在试样上面画出两条平行的圆周标线。如果标线不清楚,可适当调整划线笔的高度。然后,再反方向转动手轮一圈回到开始位置,这时才能保证调整后画出的标线与调整前重合。

 

5、取下试样参照国标GB/T 6671-2001《热塑性塑料管材纵向回缩率的测定》中试验规方法AB做回缩率试验。

该公司产品分类: 密封胶检测仪器 划线器 电工套管检测仪器 透水砖检测仪器

CBF-F71H齿轮泵CBF-F71H齿轮泵

CBF-F10-40/10齿轮油泵CB-32H  齿轮泵CB-50H  齿轮泵CB-100H  齿轮泵CB-115H齿轮泵

 齿轮油泵CB-32P齿轮泵  齿轮泵CB-50P齿轮泵  齿轮泵CB-100P齿轮泵  齿轮泵CB-115P齿轮泵

 齿轮泵CBF-F10H齿轮泵  齿轮泵CBF-F16H齿轮泵   齿轮泵CBF-F18H齿轮泵  齿轮泵CBF-F25H齿轮泵 

齿轮泵CBF-F31.5H齿轮泵 齿轮泵 CBF-F40H齿轮泵  齿轮泵CBF-F50H齿轮泵  齿轮泵CBF-F63H齿轮泵  齿轮泵CBF-F71H齿轮泵 

齿轮泵CBF-F80H齿轮油泵CBF-F90H 齿轮泵 CBF-F100H齿轮泵 

齿轮泵CBF-F112H 齿轮泵 CBF-F125H  齿轮泵CBF-F140H齿轮泵CBF-F10-40/10齿轮油泵CB-32H  齿轮泵CB-50H  齿轮泵CB-100H  齿轮泵CB-115H齿轮泵

 齿轮油泵CB-32P齿轮泵  齿轮泵CB-50P齿轮泵  齿轮泵CB-100P齿轮泵  齿轮泵CB-115P齿轮泵

 齿轮泵CBF-F10H齿轮泵  齿轮泵CBF-F16H齿轮泵   齿轮泵CBF-F18H齿轮泵  齿轮泵CBF-F25H齿轮泵 

齿轮泵CBF-F31.5H齿轮泵 齿轮泵 CBF-F40H齿轮泵  齿轮泵CBF-F50H齿轮泵  齿轮泵CBF-F63H齿轮泵  齿轮泵CBF-F71H齿轮泵 

齿轮泵CBF-F80H齿轮油泵CBF-F90H 齿轮泵 CBF-F100H齿轮泵 

齿轮泵CBF-F112H 齿轮泵 CBF-F125H  齿轮泵CBF-F140H齿轮泵CBF-F10-40/10齿轮油泵CB-32H  齿轮泵CB-50H  齿轮泵CB-100H  齿轮泵CB-115H齿轮泵

 齿轮油泵CB-32P齿轮泵  齿轮泵CB-50P齿轮泵  齿轮泵CB-100P齿轮泵  齿轮泵CB-115P齿轮泵

 齿轮泵CBF-F10H齿轮泵  齿轮泵CBF-F16H齿轮泵   齿轮泵CBF-F18H齿轮泵  齿轮泵CBF-F25H齿轮泵 

齿轮泵CBF-F31.5H齿轮泵 齿轮泵 CBF-F40H齿轮泵  齿轮泵CBF-F50H齿轮泵  齿轮泵CBF-F63H齿轮泵  齿轮泵CBF-F71H齿轮泵 

齿轮泵CBF-F80H齿轮油泵CBF-F90H 齿轮泵 CBF-F100H齿轮泵 

齿轮泵CBF-F112H 齿轮泵 CBF-F125H  齿轮泵CBF-F140H齿轮泵

该公司产品分类: 柱塞泵 叶片泵 齿轮泵 换向阀 电磁阀

友欣YX-WK/SF 7320全自动水分仪,100%放心选择

YX-WK/SF 7320全自动水分仪技术参数:

煤样质量:全水分10g~12g(粒度<6mm);空干基水分0.9g~1.1g(粒度<0.2mm

测试数量:全水分20/次,空干基水分20/

测试时间:可依据国标定时,也可以恒重, 20min~40min

控温精度:±2.5

工作电源:AC 220V±22V / 50Hz

功率:≤1.6kW

主机尺寸:580mm×650mm×660mm

主机重量:75kg

 
YX-WK/SF 7320全自动水分仪技术特点:

 YX-WK/SF 7320全自动水分仪由计算机控制自动称样,自动判别水分烘干。结果自动计算、存盘、打印。内置精密电子天平,称量稳定、可靠。

不论测试分析基水还是全水,单次可测试多达20个试样,是国内同行同类仪器最高记录保持者。

光波加热,鼓风干燥,炉温均匀,控时自选模块可方便用户进行检查性干燥。

标准试验时间,完全符合仲裁法,结果可用于法定仲裁。

具备通氮实验功能,具有国内同行最小通氮实验空间,大大节约氮气使用量,可对所有煤种进行实验。

全不锈钢内胆,反射性好,加热更加均匀。

大尺寸观察窗,可随时清晰观测不正常实验情况,

无微波泄露和辐射问题,健康、安全。

采用先进的USB技术,即插即用,降低了对计算机的要求,可由一台微机控制多台水分仪或与其它仪器组成综合测试仪,实现一机多控。

可联网实现远程数据共享。

该公司产品分类: 灰熔熔性测定仪 马弗炉 水分仪 工业分析仪 元素分析仪 定硫仪 量热仪 仪器仪表

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