2014年(127)
分类: iOS平台
2014-10-22 11:29:43
Lightning stroke has great destructive power, and its destructive effect is comprehensive. As we all know that the highway construction work is generally in the outdoor environment, so the electrical apparatus control system and micro-electronics control device of mini are easily to be struck by lightning.
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High temperature is adverse to , especially when its bearing temperature rises, the lubrication effect will reduce, and the cylinder will produce certain thermal stress, which will make lining board screw broken; on the other hand, working under the high temperature also has a bad effect to the health of operators, and the efficiency is not high at this situation.