Research of the Conversion Relations between Permeation Amount for Closed Water and Decompression Amount for Closed Air for the Airtightness Test of High Pressure Vessel是什麼意思_Research of the Conversion Relations between Permeation Amount for Closed Water and Decompression Amount for Closed Air for the Airtightness Test of High Pressure Vessel在線翻譯_英語_讀音_用法_例句