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cold nitrogen gas 低温氮气
What are the purposes of helium and nitrogen gas? 氦气与氮气在这套系统中有何作用？
It was an adaptation of Wilson's cloud chamber, filled with nitrogen gas. 这只是对威尔逊氮气云室的一种改进。
Oxygen permeance and nitrogen gas permeance of materials should be tested. 氧渗透和氮气渗透的材料，应进行测试。
The recycled dry nitrogen gas is used to purge the sample chamber and upper lid window surface of condensation. 循环的干氮气被用于排除腔体内的空气和吹扫顶盖窗口。
This solid generant buns in an enclosed chamber to produce harmless nitrogen gas. 这种物质燃烧时会产生无害的氮气。
After purging with nitrogen gas and cooling to 80.degree. C, the contents of the reactor are bottled. 在用氮气吹扫和冷却到80度后;反应器中的物质被瓶装.
Simple structure,ideal greasing position and rear cover with nitrogen gas leakage proof make the maintenance very easy. 简单的结构;极佳的油脂润滑位置;无氮气泄漏的后盖;使维修保养异常便利.
One of these comes from making fertilisers, using the Haber-Bosch process which converts nitrogen gas into ammonia. 其中一种是通过将氮气转换成氨气的Haber-Bosch工序来制造肥料。
Simple structure, ideal greasing position and rear cover with nitrogen gas leakage proof make the maintenance very easy. 简单的结构、极佳的油脂润滑位置、无氮气泄漏的后盖,使维修保养异常便利。
Abstract: The emission spectrum of nitrogen gas behind normal shock wave at different moments is measured with an optical multichannel analyser. 文摘:利用多通道光学分析仪测量激波波后不同时刻高温氮气的辐射光谱发现，辐射随时间发生强烈的变化。
This innovative technique converts some NOx into ammonia and then recombines it with the remaining NOx to make nitrogen gas. 这项创新技术可将部份氮氧化物转换成氨，再让它与剩馀的氮氧化物结合，形成氮气。
In recent years, nitrogen gas -lift has been successfully used in backflow of fracture fluid, draining water and recovering gas, and dis... 氮气气举不仅成为常规油井排液的主要手段,而且在高凝油井的成功尝试,使辽河油田利用氮气气举工艺技术在特种油的开采方面拓展了新的途径。
Simple structure，ideal greasing position and rear cover with nitrogen gas leakage proof make the maintenance very easy. 简单的结构、极佳的油脂润滑位置、无氮气泄漏的后盖，使维修保养异常便利。
First off, the closing of the epiglottis prevents the nitrogen gas from escaping, so it is forced into your body instead. 要是照这个逻辑....是不是吞下去憋半秒钟之后做打嗝那个动作并且张嘴...就可以利用气化压力从嘴里高速喷出液氮呀....
This strain of wheat can grow during a cold spring. 这种小麦可以在寒冷的春天生长。
In a process called denitrification, the microbes convert nitrates in the water into nitrogen gas, which is released into the atmosphere. 在这种名为脱氮作用的过程中，微生物将在水中的硝酸盐肥料转化为氮气，并释放进入大气环境。
The principle and operation status of pressure swing adsorption nitrogen units and the influential factors on nitrogen gas purity was introduced. 介绍了变压吸附制氮机组的工作原理、影响氮气纯度的因素以及运行状况。
Some manufacturers have attempted to dry the chamber by blowing sterile nitrogen gas through the chamber at a pressure above atmospheric pressure. 一些生产商使用无菌的氮气吹干箱体，保持箱体的压力大于一个大气压。
The girl stood shivering with cold on the doorstep. 那姑娘站在门前的台阶上,冷得直打哆嗦。