overhaul period造句

By using new type tube arrangement, rationally adjusting support spacing of cooling tubes, and replacing cooling tubes, the old condenser was retrofitted in overhaul period.

During the overhaul period in 2001, an all-sided inspection was made to the three towers, causes were analysed, and measures were taken, the problem of surface cracks have been solved.

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.