large diameter hole

常見例句

This paper introduces the key point of design of club-footed pile in large diameter hole in soft earth base.
文章介紹了選煤廠建筑在軟弱土地基條件下大直徑挖孔擴底的設計要點。
High pressure ring-shaped DTH drills are key equipment for underground high level large diameter long hole mining.
高氣壓環(huán)形潛孔鉆機是地下礦山高階段大直徑深孔采礦的關鍵設備。
What we have done in this paper is of great significance in designing the heavy rock drill to drill deep and large diameter hole.
為大孔徑深孔鑿巖的重型液壓鑿巖機的研究與研發(fā)打下理論和實踐基礎。