horizontalizevt.使成水平horizontaladj.水平的；横的n.水平线；水平面horizontal segments水平段horizontal training水平整枝horizontal timebase水平时基Horizontal helicity水平螺旋度horizontal cylinder卧式气缸horizontal fragment水平断片horizontal scanning水平扫描,行扫描horizontal measures[经] 横向衡量法horizontal airspace水平空域horizontal momentum水平分动量