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This paper describes the structure, function and feature of an on-line coating inspection device for three layer PE pipe.
介绍三层PE管防腐层在线检测装置的结构、功能和特点。
youdao
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This paper describes the structure, function and feature of an on-line coating inspection device for three layer PE pipe.
介绍三层PE管防腐层在线检测装置的结构、功能和特点。
youdao