air tight construction
... 气密混凝土：Orthogonal experiment 气密构造：air tight construction 气密盖：airtight cover ...
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采用卧式圆筒构造，结构合理。 充气密封驱动轴，清洗时可切换成水。
The mixer adopts reasonable horizontal cylinder structure, equipped with inflatable sealing drive shaft, it can be switched to water when cleaning.
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