key working procedure

• 关键工序

key working procedure的用法和样例：

例句

1. Backfill grouting is a key process during shield tunnel construction.
   摘要壁后注浆是盾构施工的关键工序。
2. The scouring of dispersion cotton fibers is the key part of colored spinning products.
   棉散纤维前处理是色纺产品的关键工序。