下滚的英文

scroll down

• 下:    below; down; under ...
• 滚:    roll; turn round; ...
• 下滚轮:    bogie roller

例句与用法

1. The stone rolled down the hill by gravity
   石头在重力作用下向山下滚去。
2. Rolling down strategy
   下滚策略
3. I had not time to be afraid , but , as the blow still hung impending , leaped in a trice upon one side , and missing my foot in the soft sand , rolled headlong down the slope
   我连害怕都来不及，就在这刀悬未落的危难关头，我一下子就跳到了一边，脚踩到松软的沙子里没有站稳，跌了一跤，头朝下滚下了斜坡。
4. The meshing efficiency of the drive is studied and analyzed in theory . the different formulas for meshing efficiency of drive are introduced on different conditions when stator or worm is fixed respectively
   从理论上研究分析了滚锥齿超环面行星蜗杆传动的啮合效率，推出了在定子固定和蜗杆固定两种情况下滚锥齿超环面行星蜗杆传动啮合效率的计算公式。