item variation

• 工程变更

item variation的用法和样例：

例句

1. In order to overcome the influence of variation to the project goal, many people carried on to the variation control thoroughly, proposed many control measures.
   为了克服工程变更对项目目标的影响，业内人士对工程变更控制进行了深入地研究，提出了许多控制措施。