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。
If we place a semipermeable membrane (like that in a reverse osmosis filter) between sealed bodies of salt water and fresh water, the fresh water will gradually travel through the filter by osmosis.
如果我们把一个半透膜(如，在反渗透过滤器)之间的海水和淡水密封机构，将逐步淡水通过渗透穿过过滤器。
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