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The principle, equipment, processing of preparing the multi-component standard gas by gravimetric method andthe analyzing method for gas purity were introduced. 介绍重量法制备标准混合气体的原理、装置、制备过程,以及标准混合气体组分纯度的分析方法。
A standard curve is done by deterring a standard gas of benzene homologues,which can produce an auto database for quantifying the content of trial materials. 采用不同浓度的苯系物标气做一条标准曲线,可编辑出一个自动鉴别和定量所选化合物库文件,进行准确的定量分析。
Using the standard gas confected by National Standard Research Center for CRM,the system can detect the concentration of volatile organic compounds and the ultra-low detection limit reaches 1 ppb. 利用国家标准物质中心配制的标气,系统可以有效检测挥发性有机化合物浓度,检测极低限达到了1 ppb。
P33-NG3 North American standard gas furnace; combustor ;SIT Valve chamber; electric pressure ignition; Ceramic simulation wood; Simulation ceramics ashes, safety mini crystal ceramics glass; Flame regulator. NG3北美制式天然气炉体；燃烧室；SIT阀体；压电点火器；陶瓷仿真木材；陶瓷仿真灰烬,微晶陶瓷安全玻璃；火焰调节器。
The portable humidity generator had the function of automatic generating standard gas of different flow and dewpoint by using the microprocessor and the technology of mass flow controlling. 该便携式湿度发生器利用分流法湿度发生原理,采用微控制器和质量流量控制技术实现了自动发生不同流量、不同露点气体的功能,可为露点测试仪检定和校准提供动态标准湿度气体。
Several problems existed in the preparation of standard gases are introduced detailed,and concrete projects to solve these problems are put forward. 详细介绍了我国标准气体制备过程中存在的诸多问题,对如何解决这些问题提出了具体方案。
THE INLET SYSTEM OF STANDARD GAS 标样气体进样系统
The technology of make up standard gas 标准气体的配制技术
standard gas of ethylene in nitrogen 氮气中乙烯标准气体
standard gas of oxygen in nitrogen 氮气中氧标准气体
There is a standard form of oath used in lawcourts. 法庭中使用的誓词有固定的格式。
This is one of the standard books on the subject. 这是有关这个问题的权威著作之一。
It will send you standard form for you to fill out. 它(商标局)会寄给你标准表格要你填写。
That country came off the gold standard long ago. 那个国家好久之前就放弃金本位制了。
Such prices hit off with the standard of our life. 这样的物价与我们的生活水准相符。
A can like this is considered below standard. 这样的罐头认为是不合格的。
Their work is not up to standard. 他们的工作成绩不够标准。
This is the standard textbook on the subject. 这是这一科的权威性课本。
Goods are packed in standard export packing. 货物按标准出口方式包装。
Cargo survey and find below standard filing claim. 货品检验后发现不合标准，故请求索赔。