horizontal rib横肋horizontaladj.水平的；横的n.水平线；水平面horizontal placed micro-tube水平布置微管horizontal rotating bioreactor旋转式生物反应器horizontal shaft water turbine水平轴式水轮机horizontal earthboring machine横向钻孔机horizontal centering amplifier水平定心放大器horizontal-shaft arrangement横轴式布置horizontal dentoalveolar fiber水平位牙槽纤维horizontal hand sawing machine卧式带锯机horizontal vibration isolation水平隔振horizontal directivity pattern水平面方向性图