词汇	tree strata
释义	tree strata 乔木层
随便看	speed change valve speed changing speed-changing adjustment speed-changing arrangement speed-changing bevel gearing planetary gearing speed changing box speed-changing deformation gearing speed changing device speed-changing friction gearing speed changing gear speed changing gear box speed-changing gear box speed-changing gear boxes speed-changing gearing speed-changing gearing, pedestal gearing speed-changing gearing, reversing gear speed-changing gearing using V-belt speed-changing gear with helical gears speed-changing gear with toothed belts speed-changing gear with worm-gears speed changing lever speed changing mechanism speed-changing planetary gearing speed changing ratio speed chang lane