短語詞組短語conical seat valve 錐形座閥;斜形座閥conical wing valve 錐形節(jié)流閥conical l valve 錐形閥conical seated valve 錐形座面閥conical spiral valve spring 錐形螺旋閥簧conical rotary valve 錐形回轉閥conical slide valve 錐形滑閥conical cup valve 錐形杯突沖極限值conical bench valve 錐形座閥 返回 conical valve