The mixture must be of varying degrees of richness to suit engine operating conditions. It must be rich (have a higher percentage of fuel) for starting, acceleration, and high-speed operation.

混合气的浓度比例可以改变，以适应发动机的运行状况。汽车在启动、加速和高速行驶时，需要含燃油浓度较高的混合气；

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For the AC double speed elevator, the government series starting impedance is started and the time of the impedance is adjusted to ensure the smooth transition of the acceleration process.

对于交流双速电梯，府串联启动阻抗启动并公道调整切除阻抗的时间，保证加速过程平滑过渡。

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The experiment proves that this method can perfectly control the running modes such as starting, acceleration, uniform motion, slowdown and creeping of the hoist.

实验证明，该方法可更好地实现提升机的启动、加速、匀速、减速及爬行等各运行阶段的控制。

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That's an acceleration of the original schedule, which gave Comcast the option to expand its ownership starting in 2014.

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