horizontal rib横肋horizontaladj.水平的；横的n.水平线；水平面horizontal oil hydraulic press卧式双动油压机horizontal maxillary osteotomy勒福Ⅰ型截骨术horizontal-flow grit chamber平流沉砂池horizontal displacementpattern水平位移模式horizontal-axis wind turbine水平轴风力机horizontal pneumatic conveying气力输送horizontal pendulum tiltometer水平摆倾斜仪horizontal parallax difference左右视差较horizontal directional driller水平定向钻机horizontally layered landslide近水平地层滑坡