在作功冲程期间,气门的位置都是关闭的.The position of the valves during the power stroke are both closed.动力冲程的后段是绝热膨胀过程.The remainder of the power stroke is an adiabatic expansion.当排气冲程开始时, 气缸被向上运动着的活塞刮掠.When the exhaust stroke starts, the...
Diffusional limitations and slow significant chemisorption processes may not be readily detected.扩散控制和显著缓慢的化学吸附过程是不易检测的.Electric whisks should be used on a slow speed.使用自动搅拌器时应该选用慢挡。Crepuscular , the setting sun lies lac...