ULCER
发表于 2025-3-23 11:25:35
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consolidate
发表于 2025-3-23 15:13:13
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dura-mater
发表于 2025-3-23 18:22:12
Helium Gas Recovery Systems,. Where liquid helium is bought out, it is a matter of returning the helium gas in cylinders to the supplier. There may be an economic advantage in returning the gas at a low level of impurity, and in this case what is said below about purification will be relevant. The owner of a liquefier will wan
linear
发表于 2025-3-23 22:18:53
Cryostat Dewars,ng the reader to make the appropriate simplifications for himself if he is working at higher temperatures. For straightforward experiments there may be a case for enclosing a container for liquid helium in a radiation shield and an outer vessel within which a high vacuum can be maintained. (See Crof
标准
发表于 2025-3-24 05:19:45
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吹气
发表于 2025-3-24 06:53:15
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BLANK
发表于 2025-3-24 12:34:35
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GENRE
发表于 2025-3-24 17:53:29
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口诀
发表于 2025-3-24 19:03:32
Kathinka Sinha-Kerkhoff,Kate Kirkng the reader to make the appropriate simplifications for himself if he is working at higher temperatures. For straightforward experiments there may be a case for enclosing a container for liquid helium in a radiation shield and an outer vessel within which a high vacuum can be maintained. (See Crof
ATRIA
发表于 2025-3-25 01:03:52
Kathinka Sinha-Kerkhoff,Kate Kirkases at pressures above atmospheric. The energy stored in a compressed gas may be considerable — in contrast with the case of a compressed liquid — and mechanical failure may have such serious consequences that the following steps should be followed scrupulously, however strong the temptation to tak