1)  liquefaction of gases
气体液化
2)  Gas liquefaction
气体液化
3)  gas liquefaction facility
气体液化设施
4)  gas
气体
1.
Effect of 80 t Converter-Ladle Argon Stirring-Concasting Steelmaking Process on Gas and Inclusion Content in Steel Q235A;
80t转炉-钢包吹氩-连铸冶炼过程对Q235A钢气体夹杂含量的影响
2.
Surface Characteristics of Cemented Carbides Machined by Ultrasonic Vibration Assisted EDM in Gas Medium;
超声振动辅助气体介质电火花加工硬质合金表面裂纹特性
3.
Effects of gas trapped in nickel alloy coating on corrosion behavior of coating deposited by HVOF;
滞留气体对镍基HVOF喷涂层腐蚀行为的影响
5)  gases
气体
1.
Characterization of gases and water soluble ion of PM_(2.5) during spring and summer of 2006 in Xi'an;
西安春夏季气体及PM_(2.5)中水溶性组分的污染特征
2.
The solubility of various gases such as CO2,CO,O2,H2,SO2,N2,alkanes and alkenes in different ionic liquids and the methods for measuring the solubility were reviewed,and the basic laws of the gas solubility in ionic liquids were summarized.
系统地介绍了气体如CO2、CO、O2、H2、SO2、N2以及低级烷烃和烯烃在不同离子液体中的溶解性能以及测量溶解度的方法,总结了气体在不同离子液体中溶解性能的一般规律。
3.
Meantime NH_3 gases were also sampled using passive Ogawa sampler.
结合大气 SO_2、NO_2浓度数据,对西安市春、夏季气体及 PM_(2。
6)  air
气体
1.
Skills on decreasing air-producing for patients during intravenous fluids infusion;
减少静脉输液过程中产生气体的技巧
2.
This article introduces the facture methods and demonstrational methods on the experimental fix of air s working outside and expending inner energy.
介绍了"气体对外做功、内能减少"实验装置的制作方法和演示方法。
3.
Air drilling is a drilling technique that uses compressed air or mixture of air and fluid as its circulation medium or penetration power during drilling process.
运用比较成熟的喷射钻进理论和以压缩空气作为冲洗介质的双壁管空气反循环连续取样的钻进机理,让两者有机结合起来,研究一种新型的空气钻进技术——反循环强力气体喷射钻进技术,钻进厚达数十米乃至上百米地表松散的覆盖层或较软的岩层,将会大大提高钻进效率,降低钻进成本,克服用水困难。
参考词条
补充资料:气体液化
分子式:
CAS号:

性质:使气体凝结变为液态的过程。气体的温度在它的临界温度(TC)以上时,不管用多大压力都不能使它液化。由于大多数气体的临界温度很低(例如空气的TC =132K),所以要液化气体先要使它降温。最常用的降温方法是节流膨胀,即林德(Linde)法。气体经压缩后进入热交换器中的螺旋管的喷嘴进行节流膨胀后变冷,冷气回至压缩机时又使螺旋管中热气冷却,如此经多次循环,即有部分气体在节流膨胀后液化。对氢和氦则在节流膨胀前须将其分别用液氮和液氢冷至195K和23.6K以下。采用压缩或压缩冷却并用的方法使其降至临界温度以下也发生液化。气体液化是放出热量。临界温度较高的气体,在常温下经压缩就能液化,如二氧化碳、二氧化硫、乙炔等碳氢化合物;临界温度较低的气体如一氧化碳须经压缩和冷却才能液化。临界温度很低的气体,须经压缩并冷却到接近绝对零度的低温才能液化(例如氢氦等)。

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