engineering change notice
- 工程改变命令：用于改变元件、组件，或流程、工作指令文档，并且也可用于改变规格。
Engineering Change Notice
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abstract:
An Engineering Change Notice (ECN), or Change Notice, is a document which records or authorizes a change to a specific design. The reasons for the change should also be recorded.
以上来源于:
WordNet