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Is a new type of ballastless track, with reinforced concrete slabs, and under the big board with emulsified asphalt cement mortar as the first adjustment layers (or overlay on a cushion of high molecular elastic material layer) consisting of orbit. This kind of track is suitable for stone roadbed or non - ballasted deck. The asphalt concrete bearing layer shall be installed on the soil foundation. This kind of track integrity is good, the line is stable, the maintenance workload is small, but the cost is high, the construction period is long. Japanese railways have been used in the Shinkansen
Through the filter screen, the process of the process is carried out through the outlet, and the particles in the water are trapped inside the filter. So continuously circulation, more and more particles trapped down, filtration speed slower and slower, and imports of sewage is still continue to enter, filter hole will be more and more small, thus produce pressure difference between inlet and outlet, when poor magnanimous to set data, differential pressure transmitter will be routed to the controller, control system startup drive motor through the mechanical drive shaft rotation, open the outlet at the same time, by the discharge outlet, when the screen is clean, differential pressure drop to the minimum, the system returns to the initial filter, normal operation of system
World's longest over-water bridge, the 41.58km-long Qingdao Haiwan Bridge, opens to traffic in China's Qingdao on the last day of June. The bridge connects the town of Qingdao with Hongdao in Chengyang District as well as the suburban Huangdao District across the waters in the northern part of Jiaozhou Bay in Shandong Province.
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