| 1. | To make an rpm-drop test, a tachometer is needed .
做每分钟转速下降试验时，需要一个转速表。 |
| 2. | The ratio of the crankshaft to the revolutions of the camshaft is 2∶1 .
曲轴的转速与凸轮轴的转速之比是21。 |
| 3. | Measurement of cage speed can be used to assess the amount of sliding .
测量保持架的转速可用来估算滑动的大小。 |
| 4. | The whole drum rotates at a steady speed of about sixty revolutions per second .
整个磁鼓大约以每秒60转的恒定转速旋转。 |
| 5. | The throttle plate moves toward the closed position as rated speed is reached .
当达到发动机额定转速时，节流板趋于关闭位置。 |
| 6. | At higher speeds, a larger amount of fuel tends to be discharged from the main nozzle .
在较高转速时。主喷嘴会喷出大量的燃油。 |
| 7. | A governor is added to an engine to control or limit engine speed or road speed .
为了控制或限制发动机转速或行驶车速，发动机上装有限速器。 |
| 8. | In the left hand side of the instrument panel, there is a display for engine speed and the trip computer .
仪表板左边有一个发动机转速和旅程计算机显示器。 |
| 9. | This prevents delivery of additional amounts of air-fuel mixture and any further increase in engine speed .
这样就不会提供更多的空-燃混合气，使发动机转速不能再升高。 |
| 10. | Spindle feeds and speeds are controlled by selector levers which engage the proper gears in the drill head .
主轴的进能量和转速是通过选速杆使主轴箱中的适当齿轮相啮合而控制的。 |
