手臂驱动时，手臂速度可有旋钮控制大小，可高低速切换；
During arm drive, the arm speed can be adjusted through the knob, with switchover between high speed and low speed;
虽然切换会降低速度，但在给定时间您通常仅使用其中之一或其中之二。
Even if it is slow to switch between them, you are probably working in only one or two at any given time.
计算结果显示，高、低速摇臂满足设计要求，切换活塞的尺寸偏差不影响VVT机构的工作。
The analysis results indicate that intake rockers satisfy for design requirements and the dimensional discrepancy of the switching piston little (affects) on the VVT mechanism performance.
阻力扭矩增大时，自动切换到大扭矩低速。
It tightens small torque at high speed and is automatically switched to low speed when torque resistance is increased.
阻力扭矩增大时，自动切换到大扭矩低速。
It tightens small torque at high speed and is automatically switched to low speed when torque resistance is increased.
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