To achieve an effective Ultimate Frisbee toss, the wind speed can't be too high.
为了能有效的投掷飞盘，风速不能太快。
The mean wind energy density, mean effective wind energy density and annual available time of wind energy are calculated by using Two-Parameter Weibull Distribution function of wind speed.
采用风速的韦布尔双参数方法测算出平均风能密度、平均有效风能密度，以及年风能可利用时间。
Results of calculation show that the differences of the sea surface effective radiation between cloudy and clear skys are very large, but their variations with the changes of wind speed are small.
结果表明，晴天与阴天的海面有效辐射值相差较大，可是它们随海面风速的变化均甚小。
Results of calculation show that the differences of the sea surface effective radiation between cloudy and clear skys are very large, but their variations with the changes of wind speed are small.
结果表明，晴天与阴天的海面有效辐射值相差较大，可是它们随海面风速的变化均甚小。
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