4 All removable internals shall be checked by suitable methods to ensure their insertability and removability through the manhole.
所有可拆除内件均需
当的方法进行检查以确保其通过人
的可嵌入
及可拆除。
,可解职4 All removable internals shall be checked by suitable methods to ensure their insertability and removability through the manhole.
所有可拆除内件均需当的方法进行检查以确保其通过人的可嵌入及可拆除。
声明：以上例
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