面对越来越严峻的竞争压力，国内外企业都试图寻找一种能够延长企业寿命的方法。
Facing more and more severe pressure of competition, the domestic and foreign enterprises attempt to seek for a method to be able to lengthen the enterprise's life.
在经济低迷时期，企业推迟购买服务器以节省成本，延长了产品的更换周期。服务器的使用寿命通常为5年左右。
Businesses had deferred purchases of servers during the economic down times to save costs, extending the replacement cycle for products that tend to have a working lifespan of about five years.
本实用新型公开了一种延长使用寿命，降低企业生产成本的煤矿耐变形风门。
The utility model discloses a coal mine deformation-resistant air door, which has long service life and can reduce the production cost of enterprises.
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