combination tapsectional tap组合: make up; compose; constitute丝锥: tap; screwtap组合丝缕: conjugate filaments丝锥: [机械工程] tap; screwtap 粗制丝锥 taper tap; 中丝锥 second tap; 精丝锥 bottoming tap复合丝: composite filament; composite yarn下载手机词典可随时随地查词查翻译
