herringbone pump gear人字齿齿轮泵
herringbone spur gear人字圆柱齿轮
herringbone gear pump人字齿齿轮泵;人字齿轮原
herringbone gear shaping machine人字齿轮刨齿机
herringbone gear installation人字齿轮装置
herringbone gear milling machine人字齿轮铣床
Double Herringbone Gear Shaft双人字齿轮轴
herringbone gear cutting machine人字齿轮切齿机
herringbone gear pu人字齿齿轮泵
N（名词） a gearwheel having two sets of helical teeth, one set inclined at an acute angle to the other so that V-shaped teeth are formed 人字齿轮; 双螺旋齿轮 (Also called double-helical gear)