hole shrinkage
短語詞組
- 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