保守党
发表于 2025-3-28 14:39:10
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arcane
发表于 2025-3-28 22:43:32
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Salivary-Gland
发表于 2025-3-29 01:40:11
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门窗的侧柱
发表于 2025-3-29 06:49:52
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珊瑚
发表于 2025-3-29 10:57:02
Aviation Lubricants are critical. Piston engines increasingly use multi-grade oils, single grades are still used extensively, with anti-wear and anti-corrosion additives for some classes of engines. The main gas turbine lubricant problem is transient heat exposure, the main base oils used are synthetic polyol esters w
harmony
发表于 2025-3-29 13:30:37
Liquid Lubricants for Spacecraft Applicationshat the liquid lubricant does not disappear from the mechanism by evaporation or creep. Lubricants can be used as fluids or formulated as greases. The liquids can be highly refined hydrocarbons, PAOs, silicones, polyol esters (POEs), multiply alkylated cycloparaffins, (MACs) or various perfluoropoly
迷住
发表于 2025-3-29 16:20:29
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伟大
发表于 2025-3-29 21:04:52
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larder
发表于 2025-3-30 00:26:23
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管理员
发表于 2025-3-30 05:50:20
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