结构简单，维护方便。Simple structure and convenient maintain 被抽气体直接排出泵体，不污染水，无环保压力，气体回收更便捷。Air can be took out directly and no pollution.
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It is simple in structure, convenient to operate, low cost, easy to maintain and suitable for experiment and teaching.
系统结构简单、使用方便、造价低廉、便于维护，适合于实验教学应用。
CQ type pump owns advantages such as simple structure, nice appearance, small body, little noise, reliable in operation, easy to operate and convenient to maintain.
CQ型泵具有结构简单、外型美观、体积小、噪音低、运转可靠、使用维修方便等优点。
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