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puppet valve 【机械学】提升阀,随转阀 以上来源于:《21世纪大英汉词典》 英汉大☞poppet valvepuppet valve蕈形阀puppet valve跳动阀双向☞poppet valve-- puppet valvepuppet valven.(名詞 noun)【機】提升閥(= lift valve)puppet valvelift valve提升閥document.write('function myFunction(n){var c=document.getEleme |