The top of bucket is sealed with rubber membrane, and the rubber membrane inflated at a pressure.
水桶顶端用橡皮膜密封，橡皮膜在压力作用下膨胀。
This is a sealed, watertight and dust-proof membrane keypad,.
这是一个密封的，防水和防尘膜键盘。
The sides of the oxygen enriched membrane device are all sealed except top, the bottom and the joint of the air inlet tube.
富氧化膜装置除其上面和底部与进气软管连接处外，其余各面均密封。
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