初级: elementary; primary; junior; ...齿轮: cogwheel; gear wheel wheel-l ...初级齿轮箱: primary gearbox初级齿圈: primary annulus单级齿轮: single gear单级齿轮泵: simple gear pump高级齿轮: high-class gear阶级齿轮: stepped gear单级齿轮传动: single geared drive二级齿轮传动: double geared drive; double-geared drive三级齿轮传动: triple geared drive; triplegeareddrive双级齿轮传动: double-geared; double-grared drive多级齿轮减速装置: multiple geared system二级齿轮传动的: double geared二级齿轮传动装置: double gear; two-stage gearing级齿轮传动装置: stepped teeth gear初级太阳齿轮: primary sun gear; primary sun wheel初级: elementary; primary; junior; initial 初级钢琴练习曲 elementary exercises for the piano; 现在, 中国仍然处在社会主义的初级阶段。 at present, china is still on the initial stage of socialism.; 初级班 junior class; elementary course次级齿质: secondary dentin齿轮: gear [rack; toothed] wheel; (toothed) gear; wheel gear 伞齿轮 bevel gear; 斜齿轮 helical gear; 正齿轮 spur gear; 搭上齿轮 get [put; throw] into gear; 齿轮脱开 out of gear; 这个大齿轮带动小齿轮使滚筒旋转。 this large gear turns the small one to rotate the cylinder. 齿轮互相啮合。 the teeth of the wheel gear into each other 初级;基本: primary初级班: junior courses初级板: primary plate初级泵: roughing pump初级侧: primary side