| 1. | Trouble of refrigerator cryopump and its elimination
制冷机低温泵的故障及排除
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| 2. | General specification for refrigerator cryopump
制冷机低温泵总规范
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| 3. | The key performance parameters are gotten through treating and analyzing the data getting from the cryopump cool - down test
通过对低温泵降温过程中相关数据的处理与分析，获取了低温泵的各项关键性能参数。
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| 4. | To research in the area of liquid helium cryopump used in nbi system is meaningful for obtaining better beam transportation efficiency . physical parameters and experience are obtained that are very useful in developing cryopumps
开展中性束注入系统液氦低温冷凝泵的研究，对获得优良的束传输效率，具有非常重大的意义；并为以后相关应用领域中低温冷凝泵的设计提供了性能参数和工程经验。
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| 5. | To research in the area of liquid helium cryopump used in nbi system is meaningful for obtaining better beam transportation efficiency . physical parameters and experience were obtained which is very useful in developing even larger cryopump
开展中性束注入系统液氦低温冷凝泵的相关研究，对获得优良的束传输效率，具有积极的意义；并为以后开发更大抽速的低温泵及相关应用积累了丰富的物理参数和经验。
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| 6. | The paper mainly consider the followings : the performance parameter determination of cryopump , heat load determination and heat transfer of large cryopanel , reasonable distribution of heat load , the condition for construct steady flow in small vertical circle pipeline , balance condition for gas and liquid two - phase flow in the connection pipe between cryopanel and dewar , the safety of cryopump
文中探讨了低温泵性能参数的确定；大抽速低温抽气面的热负载的确定及合理分配；冷凝面上竖直圆管内受热建立稳定流动的条件；冷凝面与杜瓦间的连接管道内气液“双相流动”的平衡条件；低温泵系统运行的安全问题。
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