horizontal bus水平母线horizontaladj.水平的；横的n.水平线；水平面horizontal branch pipe水平支管horizontal hemianopsia[医] 水平性偏盲, 上下性偏盲horizontal axial force水平拉力horizontal mortar seam水平灰缝horizontal vector loop横面向量环horizontal-flue oven水平烟道炉horizontal divestiture横向控制性处理horizontal orientation横向取向horizontal illuminance水平照明horizontal counterpart横向对应