名词
中文翻译：主节气门阀
同义词：
['primary control valve', 'primary throttle valve']
例句：
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1. Theprimary throttle valve is responsible for controllingthe flow of air into the engine.
主节气门阀负责控制进入发动机的空气流量。
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2.The primary throttle valve is located atthe top of the throttle body.
主节气门阀位于节气门体顶部。
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3. Theprimary throttle valve is used to adjustthe amount of fuel being injected into theengine.
主节气门阀用于调整向发动机喷射的燃料量。