脉动变星 (pulsating variables)星体发生有节律的、大规模运动而使亮度发生变 化的恒星。 (1) 造父变星 (Cepheid variables) ?
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The idea is to oscillate the turbocharger's variable geometry and synchronise it with the engine exhaust to get better energy recovery from the pulsating exhaust flow.
这个创意是通过调节涡流增压器的结构来使它与引擎尾气排放同步，从而达到更好的能量回收效果。
They discovered almost 800 Cepheid variable stars, a special class of pulsating star used for accurate distance measurement.
他们发现了差不多800个造父变星，一种用于准确测量距离的特殊变星。
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