gbw

Research on properties and application of GBW seal

GBW止水材料的性能及其应用研究

The accuracy of this method was demonstrated by determining certificated reference material GBW 08571 .

通过测定贻贝标准物质GBW08571验证了该方法的准确性。

High GBW amplifier with large input common-mode range ( ICMR ) is introduced to enhance differential-mode range of input signals .

设计大共模输入范围的高增益带宽积的放大器，以提高信号差模输入范围和精度；

A number of testing data were collected through calibrating various types of infrared instruments for measuring carbon and sulphur by using National standard method and National GBW standard materials .

依据国家标准方法对不同类型大量台件的红外碳硫分析仪进行检定与测试，采用国家一级或二级标准物质对仪器进行校准，在此过程中获得大量的数据。

The full differential structure maintains good CMRR and PSRR while its GBW and slew rate doubles , compared to the single-output structure .

而其全差分结构相对单端结构在几乎所有性能提升一倍的同时，还获得很好的共模抑制比和电源抑制比。

GBW seal , which will expand when water go in , is a new type of seal material . It can effectively resolve the sealing problems of settlement joints of concrete structures .

GBW遇水膨胀止水条是一种新型腻子型柔性嵌缝止水材料，可有效地解决混凝土结构的接缝止水问题。

Satisfactory results of the determination of Pb and Cd in the certified reference materials ( trace elements in water GBW 08608 ) and the South lake water were obtained by using the above method .

该方法用于水中微量元素（GBW&08608）和南湖水样中Pb和Cd的测定均获得了满意的结果。10mL富集的检出限（3）σPb：1.58μg。

To replace the invalid seals by GBW seals has obvious advantages of being simple , quick and less interferences in construction , less costs and good sealing effects in reconstructing culverts .

在涵闸改建过程中进行止水更换时，采用该止水材料具有施工简单、快速、干扰少、投资省、止水效果好等显著优点。

The relative standard deviation and relative error for the determination of lead in GBW 02703 ( CRM , SBM , Beijing , China ) were 2.6 % and 0.65 % , respectively , with satisfactory results .

对国家保证参考物质（CRM）锌样（GBW02703）中铅的测定，相对标准偏差和相对误差分别为2.6%和0.65%，结果令人满意。

The holmium doped oxide reference material GBW ( E ) 130112 is a kind of standard reference material for absorption spectrophotometer . It can emit 547.7 nm fluorescence when excited by xenon lamp light .

用光激发氧化钬滤光片标准物质GBW（E）130112时，能发射547·7nm的荧光谱线。

Trace elements in certified reference material ( GBW 07103 ) were determined by the method , the determined values were in good agreement with the certified value . The coal flying ash cenosphere samples from Hengshui and Dezhou were determined , and the recoveries were 87.9 % 105.6 % .

用该方法分析了标准物质（GBW07103）和德州、衡水的粉煤灰漂珠样品中的微量元素，标准物质分析结果与参考值一致，实际样品加标回收率为87.9%~105.6%。