concert
发表于 2025-3-28 15:16:12
Miscellaneous additives, the industry. This led to the development of the Sequence VI test for fuel consumption, which requires that the candidate crankcase lubricant results in decreased fuel consumption relative to a reference oil. To satisfy the sequence VI test the lubricant in a General Motor 3.8 litre stationary bed
钳子
发表于 2025-3-28 19:05:21
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过分自信
发表于 2025-3-29 01:53:16
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轻推
发表于 2025-3-29 06:42:32
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nominal
发表于 2025-3-29 11:16:37
the knowledge and under standing gained through studies dealing with physics and engineering. This book aims to bring together this chemical information and present it in a practical way. It is written by chemists who are authorities in the various specialisations within the lubricating industry, and is int978-1-4613-6578-5978-1-4615-3554-6
Mumble
发表于 2025-3-29 15:10:26
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公猪
发表于 2025-3-29 18:30:33
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方便
发表于 2025-3-29 21:39:43
Oxidative degradation and stabilisation of mineral oil based lubricants,O. cycle, the targeted oxidation of defined organic molecules, or the enzymatic oxidation of waste are all useful reactions. In contrast, the reactions of atmospheric oxygen with hydrocarbon polymers and liquid hydrocarbons (lubricants), as well as with certain biological systems, under varying cond
craving
发表于 2025-3-30 00:45:38
Viscosity index improvers and thickeners,l of an oil for application over a wide temperature range. Pennsylvania grade oils (∼ 100 VI) were the standard against which all others were measured. Hydrogenation and solvent extraction were developed to upgrade poorer quality crudes, but the refinery technology of the 1930s had a practical VI ce
朋党派系
发表于 2025-3-30 06:32:27
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