如果你踢球的力量足够大，使得球表面的气流形成湍流，则阻力会很小，你很可能踢成高射炮。
If you kick the ball hard enough for the airflow over the surface to become turbulent, then the drag force remains small and the ball will really fly.
贯流电热风幕机是在贯流风幕机的进风口或出风口处加上电加热器，利用贯流风机运转带出的热气流形成的热风幕。
The utility model relates to a cross flow electric hot air curtain machine, which is an electric heater which is connected with an air inlet or an air outlet of a cross flow air curtain machine.
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