短語詞組短語shrinkage hole and shrinkage marks 縮孔縮痕shallow hole shrinkage method 淺孔留礦法shallow -hole shrinkage 淺孔留礦法short hole shrinkage 淺孔留礦short hole shrinkage stoping 淺眼留礦法short hole shrinkage mining 淺孔留礦采礦法short -hole shrinkage mining 淺孔留礦法short hole shrinkage stoping method 淺孔留礦采礦法 返回 hole shrinkage