strong seam 中文意思是什麼
strong seam
解釋
受載焊縫-
Tight strong seam
強固緊密焊縫 -
Tight - strong seam
強固緊密焊縫 -
Applied research on 3d seismic exploration in a thin coal seam under the shield of strong reflection layer
強反射層屏蔽下薄煤層三維地震勘探應用研究
分享友人