The effective depth of improveing is in the scape of PVD, and the effective depth of vacuum combined sur-chagr preloading is decided by stress of surcharge.是什么意思_The effective depth of improveing is in the scape of PVD, and the effective depth of vacuum combined sur-chagr preloading is decided by stress of surcharge.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句