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 two different categories are multi-blade wind wheel and high speed wind wheel.
两种不同类别是指多翼风轮和高速风轮。
Set high, low wind speed, visual environmental pollution, freedom of choice, energy-saving control.
设置高、低档风速，可视环境污染情况，自由选择，节能控制。
Set high, low wind speed, visual environmental pollution, freedom of choice, energy-saving control.
设置高、低档风速，可视环境污染情况，自由选择，节能控制。
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