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Shijiazhuang has a hot summer weather. When you take a bus, the inside of the car is stuffy and hot. The air-conditioned bus is equivalent to a mobile air-conditioned room. Shijiazhuang City Bus Company, after introducing more than 300 air-conditioned buses last year, was very popular among Shijiazhuang citizens. The reporter learned from the Municipal Public Transportation Corporation yesterday that 450 new air-conditioned buses will be newly added this year.
In recent years, the provincial public transport has made great progress. No matter if it is the grade of the vehicle or the density of the network, it has greatly improved. At present, it has 3,599 public transport vehicles, including 2,400 natural gas buses. After 300 air-conditioned vehicles were put into operation in 25 urban backbone lines last year, 450 air-conditioned vehicles will be put into operation this year, and the comfort and convenience of citizens will be further improved. At present, the 450 air-conditioning bus introduction plan has been reported to the relevant departments and is expected to be put into place in batches this summer.
Reaming is a method of finishing a hole that has already been roughed.
Its primary purpose is to correct the deformation and tool marks remaining in the previous process and improve the accuracy of the hole. It is mainly used for trimming the bolt holes before the tight-fit bolts are assembled.
And the precision after reaming should generally reach the T9~T7 level, and should not be lower than the precision after lathe processing.
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