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1)  He-jet
氦喷嘴
1.
The off-line system of He-jet laser ion source at Tsinghua University was tested and described briefly.
简要介绍了建立在清华大学的氦喷嘴激光离子源离线系统。
2)  He-jet system
氦喷嘴装置
1.
A special nuclear experimental equipment including He-jet system, tape transport system(TTS) and data acquisition system is described.
介绍一套特殊的核物理实验装置,它由氦喷嘴装置、带传输装置和微机数据获取与分析系统组成。
3)  He-jet tape transport system
氦喷嘴带传输系统
1.
The two nuclides were identified and studied by a He-jet tape transport system in combination with "X-γ" and "γ-γ" coincidence measure- ments.
借助氦喷嘴带传输系统,用 X-γ和 γ-γ符合方法,分离鉴别了这两种核素,并进一步测定了它们的衰变性质。
4)  He-jet recoil fast tape transport system
氦喷嘴反冲快速带传输系统
1.
The reaction preducts were camed to a low-backgroundregion using a He-jet recoil fast tape transport system.
氦喷嘴反冲快速带传输系统将反应产物送到低本底区。
5)  nozzle [英]['nɔzl]  [美]['nɑzḷ]
喷嘴
1.
Effect of pressure drop grading structure of feed nozzle for catalytic cracking process on atomization;
催化裂化进料喷嘴压降分级结构对其雾化效果的影响
2.
Analysis on Cooling Wind-box Nozzle of Strip Continuous Annealing Cooling Furnace;
带钢连续退火冷却炉冷却风箱喷嘴的分析
3.
Numerical study of three-dimensional flow field inside the nozzle of air jet vortex spinning;
喷气涡流纺喷嘴内部三维流场的数值研究
6)  nozzles [英]['nɔzl]  [美]['nɑzḷ]
喷嘴
1.
Temperature and thermal stress analysis of coal water slurry ceramic nozzles with finite element method;
陶瓷水煤浆喷嘴温度场及热应力的有限元分析
2.
Meanwhile,the coking quality is improved through using large-flow nozzles device.
探讨了喷嘴的结构,焦炭在熄焦车内的分布情况,采用大流量喷嘴装置,改善了焦炭的质量。
3.
By using phase Doppler particle analyzer(PDPA) the atomization characteristics of two new BWJ(Ⅲ) types of high efficiency feeding atomization nozzles were studied in cold form experiment.
利用相位多普勒粒子分析仪,对BW J(Ⅲ)型干气雾化进料喷嘴的2种新型喷头雾化特性进行了冷态实验研究。
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。

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