1) helium-based gas mixture
氦基混合气
1.
Simulation study of the low mass helium-based gas mixtures and their application for the small cell drift chamber;
低质量氦基混合气及其在小单元漂移室中应用的模拟研究
2.
The performance of a small-cell drift chamber operated with two helium-based gas mixtures, He/C_3H_8(60/40) and ~He/CH_4(60/40), was studied using cosmic rays, respectively.
利用宇宙线分别研究了一个小单元漂移室在He/C3H8(60/40)和He/CH4(60/40)两种氦基混合气下的性能。
2) helium-based gas mixture
氦基混合气体
1.
Using a proportional tube, the gas gain of the helium-based gas mixture He/C 3H 8(60/40) was measured with 55 Fe 5.
利用正比计数管测量了氦基混合气体He/C3H8(60/40)在55Fe 5。
3) helium-oxygen mixture
氦氧混合气
1.
Observation on therapeutic effect of helium-oxygen mixture atomization inhalation to treat bronchial asthma patients;
氦氧混合气为驱动气源行雾化吸入治疗支气管哮喘的疗效观察
4) argon-helium gas mixture
氩氦混合气
5) Helium oxygen mixture
氦-氧混合气
6) air-helium mixture
空气-氦混合气
补充资料:氦3-氦4稀释制冷
分子式:
CAS号:
性质:3He-4He混合液在0.867K时出现界限分明的上下两相,上相3He含量高称浓相,下相4He含量高称稀相。稀相中4He的熵比3He的熵小得多,浓相中4He的熵又比稀相中3He的熵小得多。3He从浓相进入稀相或从稀相中抽走都会发生降温。用泵把3He-4He混合室与一个蒸发器和一个冷凝器连接起来就组成稀释制冷器。用抽气泵不断地把蒸发器中的3He抽走,蒸发过程中3He带走大量热量。从蒸发器中抽走的3He经冷凝器液化后再回到混合室。用此法可获得0.0035~0.0055K的超低温。
CAS号:
性质:3He-4He混合液在0.867K时出现界限分明的上下两相,上相3He含量高称浓相,下相4He含量高称稀相。稀相中4He的熵比3He的熵小得多,浓相中4He的熵又比稀相中3He的熵小得多。3He从浓相进入稀相或从稀相中抽走都会发生降温。用泵把3He-4He混合室与一个蒸发器和一个冷凝器连接起来就组成稀释制冷器。用抽气泵不断地把蒸发器中的3He抽走,蒸发过程中3He带走大量热量。从蒸发器中抽走的3He经冷凝器液化后再回到混合室。用此法可获得0.0035~0.0055K的超低温。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条