This washing machine was guaranteed against mechanical failure— I demand a new one!
这台洗衣机出售时曾担保过不出机械性故障——我要换一台新的。
For the washing machine noise and vibration reduction predecessors developed a series of mechanical damping Angle of approach, but there are limitations.
针对洗衣机的减振降噪前人开发了一系列机械角度的减振方法，但都存在种种限制。
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