The unique SPL (Disc Spring Pack Loaded) gate trim unit comprises all of the operating parts of sliding discs.No wedging effects and much smaller contacting stresses on the seating mechanism.是什么意思_The unique SPL (Disc Spring Pack Loaded) gate trim unit comprises all of the operating parts of sliding discs.No wedging effects and much smaller contacting stresses on the seating mechanism.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句