用保持近地层空气、土壤或植被表面的温度的方法，以防御农作物受霜冻或低温的危害。
... ochrana pred mäkkýšmi 软体动物防治 ochrana pred mrazom 防霜 ochrana pred povodňami 防洪 ...
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种柑橘者收到防霜保橘的警告。
Citrus growers were cautioned to protect the fruit from frost.
为了使这些大田作物能够安全越冬，防霜作业具有极端重要意义。
In order that the crops in open field could survive safely the winter frost prevention operation is of Paramount importance.
介绍了透明材料表面防雾防霜的几种基本原理及其具体实施办法。
This review systematically introduces the principle of anti fogging & anti frosting, and some means carrying it into execution.
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