The bubble has a pneumatic membrane structure, using air pump to maintain full.
作为气压膜结构空间，泡泡利用气泵维持其饱满的状态。
Adopt pneumatic suction system, noiseless and easy maintenance, to avoid vacuum pump problem.
采用气动流式吸纸系统，故障少，声音小，易保养；有别于真空泵之保养问题。
Adopt pneumatic suction system, noiseless and easy maintenance, to avoid vacuum pump problem.
采用气动流式吸纸系统，故障少，声音小，易保养；有别于真空泵之保养问题。
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