部分偏

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AllAll

Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical

Source:AllAll,DictionaryDictionary,WebWeb

Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard

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2.

Aerospace series - Sealing compounds - Part 2: Vinylidene fluoride and hexafluoropropylene base ; technical specification

航空和航天 .密封材料 .第2 部分：偏氟乙烯 -六氟丙烯基 .交货技术条件

háng kōng hé háng tiān . mì fēng cái liào . dì èr bù fen : piān fú yǐ xī - liù fú bǐng xī jī . jiāo huò jì shù tiáo jiàn