名词
中文翻译：变速阀
同义词：
['shift valve', "throttle valve例句：1. The car's speed change valve is located in the engine compartment.（这辆车的变速阀位于发动机舱内。）2. The technician had to replace the speed change valve due to a faulty seal.（技术人员不得不更换这个变速阀，因为密封出现了故障。）"]
例句：
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1. The car's speed change valve is located in the engine compartment.
这辆车的变速阀位于发动机舱内。
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2. The technician had to replace the speed change valve due to a faulty seal.
技术人员不得不更换这个变速阀，因为密封出现了故障。
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3. The engineer carefully checked the speed change valve before starting the engine.
工程师在启动发动机前仔细检查了变速阀。