slip joint attachment滑: slippery; smooth节: joint; knob; node连接体: connector滑节连接体用反角机头: contra angles for slip-joint connection滑节连接体用直角机头: right angles for slip-joint connection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:滑节连接体，即可在微信中查询翻译
