以下为句子列表：
英文: The adoption of the variable pump is a breakthrough of the water cutting jet which solved the previously problems in suing the home-made products, such as piston pump filling-up, noise, high-consumption of energy, high oil temperature, lowering of Piston
中文: 采用变量泵是水刀的技术突破，以前用国内柱塞泵，噪音大、不节能、油温高，柱塞泵在开始工作时压力会降低，这样会影响切入点效果，高压部件会受到压力的变化而影响高压部件的使用寿命。
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英文: When the switch is closed, the variable pump has no oil supply, the current decline will keep the motor in empty waiting state, thus effectively save energy.
中文: 当水开关关闭时变量泵不供油，电流下降使电机处在空载待机状态，这样就有效达到节能。
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