Adopting special technical treatment on lamps to guarantee UV depreciation less than 25% during the useful lifetime.
采用特有的处理技术，确保灯管在有效寿命期间的紫外线衰减小于25%。
The paper states the depreciation problems of domestic construction machinery and points out that low depreciation factor will result in decreament of technical equipage level of machines.
本文陈述了国内工程机械折旧问题的现状；指出，折旧率低下将导致机械技术装备水平下降；
The paper states the depreciation problems of domestic construction machinery and points out that low depreciation factor will result in decreament of technical equipage level of machines.
本文陈述了国内工程机械折旧问题的现状；指出，折旧率低下将导致机械技术装备水平下降；
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