The aging of the hot air curtain line and the improper connection method of the electric wire is the biggest hidden trouble of the accident.
热风幕线路的老化及电线的连接方法不当是造成事故的最大隐患。
Objective To research the method of rejuvenation of aging lower eyelid through the combined incisions of lateral canthus and conjunctiva .
目的：探索利用经外眦及结膜联合入路下睑年轻化美容整形术的方法。
But now, there is not a standard method to estimate the aging degree of ZnO varistor.
目前在判断氧化锌压敏电阻的老化程度方面还没有标准的方法可循。
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