work operation

• 工序

work operation的用法和样例：

例句

1. The new work procedure is a great improvement over the old one.
   新工序比起老工序来是一个巨大的改善。
2. So we find that hardening operation is made up of heating and quenching.
   因此我们发现淬火工序包括加热和淬硬两个步骤。