The test has verified the effect of the initial angle of the throttle valve and the number of workable coils of the spring on the engine′s performance and speed governoring characteristics.

通过试验可证实节流阀初始角及弹簧工作圈数对发动机性能及限速特性的影响。

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In traditional geothermal energy, engineers drill near a geyser, hot spring or volcano, stick a valve and turbine on the hot water, and that's pretty much it.

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