The exhaust gas ingredients of pulse engines, with five different combustion chamber volumes, throttle valve at small, middle and wide opening positions respectively, are tested.
对五种不同燃烧室体积的脉冲发动机在小、中和大油门开度三种供油条件下测定其排放物。
3
After a five-year observation of 200 men, researchers found those who "encounter" beautiful women tend to have lower blood pressure, moderate pulse beat, and small chances of heart diseases.