名词
中文翻译：节流阀
同义词：
['tapered seat valve', 'throttle valve', 'throttling valve']
例句：
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1. The car's engine has a throttle valve that controls the airflow.
这辆车的引擎有一个节流阀，用来控制空气流量。
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2. The throttle valve is responsible for adjusting the fuel flow to the engine.
节流阀负责调整燃油流向发动机的流量。
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3. The throttle valve is located in the exhaust system of the car.
节流阀位于汽车的排气系统中。