horizontal rib横肋horizontaladj.水平的；横的n.水平线；水平面horizontal deflection control水平偏转调整horizontal comparative method横向比较法horizontal jig boring machine卧式坐标镗床horizontal parity-check bit水平奇偶监督位horizontal construction joint水平施工缝horizontal-type accelerator卧式加速器horizontal-bed glazing jack水平式打光机horizontal section of eyeball眼球水平切面horizontal base-line method水平基线法horizontal-control monument平面控制标石