求翻译：雨雪环境：应尽可能在降雨、雪来临之前，停止焊接工作，以免雨水降落在焊接区域，造成焊缝和热影响区的冷却速度加快，金属的硬化倾向增大。为防焊接材料吸潮，应将焊接材料返回焊材库。下雪后，在焊接之前，应将雪清除干净，并用氧乙炔火焰将焊缝中的潮气清除干净。是什么意思？

Rain environment: as far as possible in the rain, snow, before the advent of stop welding, welding area in order to avoid the rain fall, causing the weld and heat affected zone of the cooling speed, metal hardening tendency increases. To prevent moisture absorption welding materials, welding consuma

Snow environment: should, as far as possible, before the advent in rain, snow, so as to avoid rain stop welding landed at welding region, causing weld and heat affected zone, the cooling speed metal of cirrhosis increased tendency. For the purpose of guarding against and welding materials absorb moi

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Rain and snow environment: where possible, rain, snow, before the onset of stop welding to avoid rain landed in the weld area, resulting in faster cooling of weld and Haz, hardening of metals tend to increase. For welding material absorb moisture-proof, should return the welding material welding mat

Rain and snow environment: where possible, rain, snow, before the onset of stop welding to avoid rain landed in the weld area, resulting in faster cooling of weld and Haz, hardening of metals tend to increase. For welding material absorb moisture-proof, should return the welding material welding mat