水封环 [机] Water seal cage ; water seal ring ; water sealing ring ; lantern ring
密封防水滑环 FSL
水面闭封潜水环境 Overhead Environments
水泵水封环 water pump gland ring
封闭式循环水养殖 closed culture with circulating water
封闭水循环 closed water circuit
封闭循环用水 closed cycle water system ; Closed circulation and reuse of wastewater
封闭式循环水冷却系统 full-closed de-ion water-cooling
封闭循环水养殖 Recircualting aquaculture system
水泵水封座环 water pump seal retainer
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