treble ported slide valve三: three孔: hole; opening; aperture滑阀: guiding valve; slide valve三孔滑车: deadeye三孔滑轮: deadeye下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:三孔滑阀，即可在微信中查询翻译
