不可比拟
发表于 2025-3-28 15:19:59
Jürgen Thees,Hannes Federrathy JPL in a number of performance areas including thermal performance. A number of factors are used to evaluate the efficiency and cooling power of cryocoolers at cryogenic coldtip temperatures. A comparison of the measured thermal performance of several cryocoolers is presented..The various cryocool
ACE-inhibitor
发表于 2025-3-28 20:54:52
W. Thoben,H.-J. Appelrath accomplish this spatial separation. The separated mounting may be necessary for purposes of positioning or remote removal of abundant compressor heat..Even in a split Stirling cooler, however, the warm end of the cold finger is inevitably found in the temperature-critical part of the application. I
Aesthete
发表于 2025-3-29 01:29:06
Patrick Horster,Markus Michels,Holger Petersenng 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
阴险
发表于 2025-3-29 05:45:47
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ICLE
发表于 2025-3-29 09:06:19
Germano Caronnid, for the 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,
LAIR
发表于 2025-3-29 13:29:04
Christof Schramm This technique is especially important for vegetatively propagated species, or, for plants that produce recalcitrant seeds. Within this chapter, methodology is presented for those vegetative, meristematic tissues (apical and axillary shoot-tips, nodes, and buds) that have the potential to develop n
orthodox
发表于 2025-3-29 18:41:21
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Frisky
发表于 2025-3-29 21:13:42
Formale Verifikation der Grundelemente in Funktionsplänen von Notabschaltsystemenlle/HOL als mechanischer Beweisassistent eingesetzt. Als letzter Schritt kann die Sicherheitsabnahme von NAS-Software leicht durch eine Rückübersetzung durchgeführt werden, eine besonders einfache, aber rigorose Methode, die auch von der SPS-Architektur unterstützt wird.
陶瓷
发表于 2025-3-30 01:51:56
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Promotion
发表于 2025-3-30 07:54:59
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