;
水;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使
适当的方法进行检查以确保其通过人孔的可嵌入性及可拆除性。
的东西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使适当的方法进行检查以确保其通过人孔的可嵌入性及可拆除性。
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