A medium-thick shelterbelt can reduce wind velocity by more than 10 percent to a distance of 20 times the tree height on the leeward side and three times the height to the windward.

中等厚度的防风林在背风侧可在20倍于树高的距离而在迎风侧则在3倍于树高的距离上减小风速10%以上。

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A leeward side of the box is provided with at least one air outlet having a vent check valve.

所述箱体的背风面至少具有一个带有出气单向阀的出气口。

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Each rise correlates with the windward-facing slope of the terrain, while declines in cloudiness are found in valleys on the leeward side.

图中每一处云量的上升都与迎风面斜坡相关，同时，云量的下降出现在背风面的山谷。

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Everyone aboard is subjected to periodic blasts of spray, and the crew members who have to work on the leeward side spend half their time up to their waists in water.

FORBES: Two Sheets to the Wind

It failed on the leeward side of the house.

CNN: Engineering a hurricane-proof roof