噱头
发表于 2025-3-23 12:20:33
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纠缠,缠绕
发表于 2025-3-23 14:47:24
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外貌
发表于 2025-3-23 18:11:33
Lubrication of Water and Steam Turbines,The steam turbine is used as the prime mover for driving equipment such as blowers, pumps and compressors, but its predominant use is to drive alternators and generators for the production of electricity.
思想
发表于 2025-3-24 00:21:11
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nutrients
发表于 2025-3-24 03:02:33
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BUCK
发表于 2025-3-24 06:35:52
Metal Rolling Operations,Of the various metal fabricating processes in use today, rolling has become established as the operation which accounts for the highest tonnages. It has proved to be a high speed process capable of producing materials to close tolerances.
patriot
发表于 2025-3-24 12:26:04
Lubricant Storage and Handling,The chief requirement when handling lubricants is to avoid contamination by dust, grit and water. Many applications require specialised lubricants but all the care with which a lubricant has been formulated, manufactured and packaged can be nullified by the presence of small quantities of contaminant.
ectropion
发表于 2025-3-24 14:55:20
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SPURN
发表于 2025-3-24 21:20:37
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食品室
发表于 2025-3-25 01:19:30
Diesel and Gasoline Engine Lubrication,for their satisfactory lubrication are reviewed in this chapter. The use of the more important official specifications for engine lubricants and the new API Engine Service Classification System in the selection of suitable lubricants for a particular application is discussed.