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- Reduction gear, rod, geared reduction unit able to transmit drive from the main motor to the roller batteries where there is a gearbox which presets the machine for work with 1 or 2 lappets. 减速齿轮，连接杆，齿轮减速单元能够传递从主电机到辊筒组件的驱动，在这里有一个齿轮箱是用来设定机器是1块橡皮布还是2块橡皮布工作。
- Studying of the mathematical model of the concave roller curved surface for steel pipe transportation equipment 钢管轧制输送设备中凹面辊子曲面数学模型的研究
- His figure looks very funny in the concave mirror. 他的样子在凹镜里显得非常可笑。
- Roller batteries fig 10, these print by means of the ink fountain, the conveyor rollers, brayers ,inkers, printing plate holder and central roller bearing the rubber stamp. 辊筒组件，由墨斗、传动辊、传墨辊、墨辊、印版辊筒、橡皮辊共同完成印刷动作。
- The calculator needs a new battery. 计算器需换新电池。
- The mechanic checked out the car battery. 汽车修理工检验了汽车里的电池。
- An indented or concave surface or area. 凹陷，洼地凹的表面或地区
- Does your car battery charged easily? 你那辆汽车的蓄电池容易充电吗？
- They are electrifying the battery. 他们正给电池充电。
- The ride on the roller coaster dizzied us. 乘坐云霄飞车使我们头晕。
- The battery is on test at the moment. 此刻正在对这种电池进行测试。
- May I borrow your roller skates? 我可以借你的旱冰鞋吗？
- If the battery is dead, the motor won't turn over. 电池要是用完了，马达就转不起来了。
- Clattering along on roller skates. 踩着轮式溜冰鞋行进
- My car battery has run down; it needs recharging. 我的汽车电池没电了，需要充电。
- The battery needs to be charged. 这电池需要充电了。
- A battery of facts bore him out. 一连串事实证明他是对的。
- Connect these wires to the leads of the battery. 将这些导线接到电池的引线上。
- A road roller is used in making and repairing roads. 压路机是用来修筑道路的。
- A captain commands a company or battery. 一个上尉指挥一个连队或炮兵连。
