double-jointing pipe 双根钻杆
Pipe-pipe jointing 管管接长
The invention relates to a jointing pipe type system for recovering and purifying washing wastewater, which belongs to the technical field of daily household energy-saving equipment.
本发明涉及一种接管式回收净化洗漱污水系统，属于日常家用节能设备技术领域。
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