定期测试（部分装置）证明书 meaning in Chinese
periodic test certificate (part of the installation)
Examples
- Main registered electrical worker provided that he has received valid " periodic test ( part of an installation ) certificate ( s ) ( i . e . form wr2 ( a ) ) from other registered electrical workers for the individual parts
主要的注册电业工程人员，在收到其他注册电业工程人员就个别部分所发出的有效定期测试（部分装置）证明书（即表格wr2 ( a )后，发出单一份