direct red直接红directadj.直接的；笔直的；坦白的v.对准；指挥；指示；命令directivity of antenna天线方向性Direct Support Platoon直接支援排direct eurrent driving直流传动系统direct-driven shears直接传动式剪切机direct stiffnessmethod直刚法direct impact strength正面冲击强度direct product algebra直积代数direct current reactor直流电抗器direct product lattice直积格direct membrane damage直接膜损害

1. The float is a directacting float switch.
   这个浮球是一个直接作用的浮控开关。