Combined with practical work,from setting isolation layer,installation of formwork,duck leakage and other aspects the problems existed in prefabrication of prestressed beam slab are pointed out.是什么意思_Combined with practical work,from setting isolation layer,installation of formwork,duck leakage and other aspects the problems existed in prefabrication of prestressed beam slab are pointed out.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句