... civilized enlightened 文明的 civilized factory 文明工厂 civilized production 文明生产 ...
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WORKING PRESSURE, it is guaranteed that the mechanical sealing will never leak, so it is an ideal device for construction of civilized factory.
密封不承受压力，确保机械密封永不泄露，是建设文明工厂的理想设备。
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