经过多年的营运，目前我国已有至少超过2000多公里的高速公路进入大修期，连霍高速公路即属此类公路。
After years of operating, at present China has at least more than 2000 kilometers of the highway into the overhaul period, even the Huo highway road is such a case.
随着我国公路建设的发展，公路养护维修的多种任务也伴随而来，尤其是我国修建的一些高等级公路已进入中修或大修期。
With the development of highway construction, road maintenance is also accompanied by a variety of tasks, in particular, some highways have entered a period of repair or overhaul.
图片：在发现号的轨道飞行器重大修改2003年8月期间，技术人员测试一个控制台上新安装的“玻璃驾驶舱”或的MED显示器。
Image: During Discovery's Orbiter Major Modifications period in Aug. of 2003, a technician tests a monitor on the console of the newly installed "glass cockpit" or MEDS. Photo credit: NASA/KSC
结果表明，经过大修改造的漏斗车可延长有效使用期。
The result shows that the effective service life of the overhauled and reformed hopper car can be prolonged.
1987年至1989年期间对《国家行政机关工作人员条例》进行了重大修改后，改名为《国家公务员暂行条例》。
From 1987 to 1989, our country changed a lot to the "Government Administrative Employees' Regulations", and changed the name into "Civil Servant Provisional Administrative Regulations".
并对此方法从拖拉机所有者追求经济利益的角度，确定了大修制拖拉机最佳更新期与合理更新期的经济界限。
Then, both optimal and rational renewal cycle under different conditions were analyzed from the viewpoint of optimizing the economical benefit of the tractors owners.
并对此方法从拖拉机所有者追求经济利益的角度，确定了大修制拖拉机最佳更新期与合理更新期的经济界限。
Then, both optimal and rational renewal cycle under different conditions were analyzed from the viewpoint of optimizing the economical benefit of the tractors owners.
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