... 防霜时间掣 defrost timer 防霜的 frostproof ; proof 防青筋霜 invigorating tonic for legs ...
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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.
然而，如今市场上有一些防晒霜产品的防日光系数高达50。
However, today there are some products on the market that have SPFs as high as 50.
据罗伊说，夜间的保温效应可以给农场提供一些防霜措施，甚至也许会略微延长作物的生长期。
According to Roy, the nocturnal warming effect could offer farmland some measure of frost protection and may even slightly extend the growing season.
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