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