Epoxy or plastic liming may be cast into the concrete pipe during manufacture;or bitumastic or coal tar epoxy may be painted on the concrete pipe surfaces after installation.
可以
混凝土管道时将环氧和塑胶衬里浇筑里面，或安装后用沥青砂浆或
焦油屠宰混凝土管的表面。
Epoxy or plastic liming may be cast into the concrete pipe during manufacture;or bitumastic or coal tar epoxy may be painted on the concrete pipe surfaces after installation.
可以混凝土管道时将环氧和塑胶衬里浇筑里面，或安装后用沥青砂浆或焦油屠宰混凝土管的表面。
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，
分未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。
