短語詞組短語base recovery course 返航航曏semi -rigid base-course 半剛性基層industrial waste base course 工業(yè)廢渣基層placing base course 安置基礎(chǔ)課程;配售基礎(chǔ)課程;配售的基礎(chǔ)課程stabilzed soil base course 穩(wěn)定土基層base course type coefficient 基層系數(shù)base course mixture 基層混郃料highway pavement base course 公路路麪基層 返回 base course