完工（部分装置）证明书 meaning in English

work completion (part of an installation) certificate

In such case , for simplicity , a single " work completion certificate " ( i . e . form wr 1 ) may be issued by one main registered electrical worker provided that he has received valid " work completion ( part of an installation ) certificate ( s ) " ( i . e . form wr 1 ( a ) ) from other registered electrical workers for the individual parts
在此情况下，可由一名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完工（部分装置）证明书（即表格wr1 ( a ) ）后，发出单一份完工证明书（即表格wr1 ），以便简化程序。