The result indicates PID control method is available to the gasoline engine idle, which is more effective than open loop control, and gets practice verification in electrical control gasoline engine.

结果表明，怠速pid控制方法应用于车用汽油机怠速控制是可行的，而且比开环控制更加有效，并在目前电控汽油机上得到了实际验证。

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Boeing said the fire was traced to a battery unit that helps to power electrical systems when the engines are idle -- typically while a plane is being serviced or cleaned.

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Boeing said in a statement that the fire was traced to a battery unit that helps power electrical systems when the engines are idle -- typically while a plane is being serviced or cleaned.

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Those batteries are used to power electrical systems, especially when the plane's engines are idle.

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