名词
中文翻译：高低压泵
同义词：
['high-pressure pump', 'low-pressure pump']
例句：
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1.The high-low pump is used to control the flow of oil in the engine.
高低压泵用于控制发动机内油的流动。
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2.The high-low pump is essential for maintaining proper oil pressure in the engine.
高低压泵对于保持发动机内适当的油压至关重要。
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3.The high-low pump was replaced after it failed several times during testing.
在测试中多次失败后，高低压泵被更换了。