The result indicates that the air water back flushing has the best effect and prominent economic benefits.

试验结果表明：气水反冲洗效果最好，经济效益显著。

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This paper simulates the effect of crosswind on the thermal performance of wet cooling tower and puts forward a feasibility advice of fixing back flow canal around the tower to reduce the water loss.

模拟了横向风对冷却塔热力特性和飘水损失的影响；提出了沿塔周设置回流槽的措施，以减少飘水损失。

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Therefore, the anti-suck-back hot water bottle cork is convenient to be unplugged and is free from influencing the original heat-preservation effect of the hot water bottle.

因此，本实用新型拔塞方便，而且不影响热水瓶原有的保温效果。

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The clay has the effect of storing rainwater, reducing the impact of flooding, while during dry spells, the water is gradually drained back into the rivers and streams.

BBC: Making a home for rare wildlife in north Devon