Offbeat
发表于 2025-3-27 00:15:46
Max Knollork reliability decisions.Develops an integrative framework .This book contains selected peer-reviewed papers that were presented at the Fourth International Symposium on Transportation Network Reliability (INSTR) Conference held at the University of Minnesota July 22-23, 2010. International schola
Fulminate
发表于 2025-3-27 01:18:42
Max KnollTR) Conference held at the University of Minnesota July 22-23, 2010. International scholars, from a variety of disciplines--engineering, economics, geography, planning and transportation—offer varying perspectives on modeling and analysis of the reliability of transportation networks in order to il
Obedient
发表于 2025-3-27 06:06:34
Introduction,cal purposes. For . technological purposes, the mechanical and electrical properties, ease of working, corrosion, and similar data concerning the materials involved are most important. For . materials, other properties may be much more significant: ease of outgassing, small vapor pressure, sufficien
周年纪念日
发表于 2025-3-27 12:10:21
General Structure and Properties of Materials (Including Metallographic Methods), be thoroughly outgassed. The process of outgassing is usually accomplished by heating, either prior to or during the pumping process. The rate of gas evolved throughout this process increases with the outgassing temperature. Generally no further gas should be evolved from the parts contained in the
insomnia
发表于 2025-3-27 15:47:55
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CORE
发表于 2025-3-27 19:30:11
Alloys of Base Metals,mposition with its characteristics would be lost. Considerable contamination of other tube parts by the evaporating material would also result (see sec. 14.5). For vacuum technique the following are of chief importance: Fe alloys with .; . alloys with ., and .; and . alloys with ., and .. Concerning
同时发生
发表于 2025-3-28 01:40:54
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Wallow
发表于 2025-3-28 05:41:39
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朦胧
发表于 2025-3-28 09:41:50
Surface Treatment of Metallic Vacuum Tube Elements, tube. This implies not only the removal of surface impurities, but also the removal of the causes of formation of chemical compounds (e. g. metallic oxides). It is recommended that initially all rough impurities be removed mechanically (sanding, brushing, swabbing). Thin layers of impurities are re
史前
发表于 2025-3-28 13:58:02
Exhaust Processes of Vacuum Tubes,sorption, contamination of surfaces), as well as economy (life and cost of operation of preliminary outgassing furnaces with high temperature), generally require that parts in sealed off tubes be outgassed again during the pumping process. The limiting temperature permissible in such outgassing is d