emulsify
发表于 2025-3-23 11:34:58
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单调性
发表于 2025-3-23 15:11:49
Cryogenic Instrumentation,vel (quantity), both point and continuous systems, and mass rate systems. In addition, there must be transducers of pressure, temperature, density, and occasionally, quality. Cryogenic instrumentation may be considered as a unique field of measurement requiring the development of new techniques and
Stable-Angina
发表于 2025-3-23 21:44:47
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Feature
发表于 2025-3-24 01:25:50
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激励
发表于 2025-3-24 04:18:06
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archenemy
发表于 2025-3-24 09:36:55
Cryogenic Instrumentation,and the peculiarities of the cryogenic fluids themselves. The latter consideration is among the strongest in setting cryogenic instrumentation apart. These fluid properties affecting cryogenic instrumentation need to be reviewed before considering the specific instrumentation techniques themselves.
Foregery
发表于 2025-3-24 12:00:22
Properties of Cryogenic Fluids, critical temperature and pressure, and the normal latent heat of vaporization for these five cryogenic fluids and several other common cyrogens. Some of the important characteristics of the most widely used cryogenic liquids are discussed more specifically in the following paragraphs.
debase
发表于 2025-3-24 15:26:18
Meenu Ramadas,Alok Kumar Samantaray an exchanger with an effectiveness less than 0.85. Heat exchanger effectiveness in this context is defined as the ratio of the actual heat transferred to the maximum heat that theoretically could have been transferred.
类人猿
发表于 2025-3-24 20:36:05
Energy, Environment, and Sustainabilitynd ethylene, are separated and purified by low-temperature distillations. Low temperatures have also been used commercially to separate hydrogen from coke-oven gas and other sources of impure hydrogen. Even the commercial production of deuterium by cryogenic separation from hydrogen has become a reality.
不自然
发表于 2025-3-25 02:22:51
Book 1989 first time, how to cool objects to a temperature lower than had ever existed na tu rally on the face of the earth. The air we breathe was first liquefied in 1883 by a Polish scientist named Olszewski. Ten years later he and a British scientist, Sir James Dewar, liquefied hydrogen. Helium, the last