n.溶解；解凍；除霜
動詞defrost的現(xiàn)在分詞形式.
The refrigerator's defrosting function is very good. 這個冰箱除霜的功能很好。
Finally, two measures to improve the defrosting performance of this chiller have been put forward. 最后，作者提出了兩種改進(jìn)風(fēng)冷熱泵冷熱水機(jī)組除霜性能的措施。
