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Rail transit has long been used as public transport in cities. It plays an increasingly important role. Economic developed countries urban traffic development history tells us that only by large passenger traffic system of urban rail transit (metro and light rail), is an effective way to fundamentally improve the urban public traffic
The function of the surface balance: the machine is better than the detection of metal objects and not interference.
The Tokyo motor show is a relatively short history of the five major auto shows, known as the "Asian car weathervane", which was founded in the 1950s and was held in the autumn of the last century. The Tokyo motor show is the largest international motor show in Asia. The first international auto show began in 1954. Tokyo has a deeper impact on the world car market and is of greater importance to the Asian auto market. The exhibition, held in chiba prefecture, near Tokyo, Japan, offers a variety of electronic 3d display equipment that gives visitors a sense of "vertigo". The Tokyo auto show in 1999 set a world record of 1.4 million visitors and saw its excitement. Compared with other major western auto shows, the Japanese auto show has more Asian Oriental charm. Japanese manufacturers have a number of small, elegant, high-end cars that can be the main character of the auto show. The Tokyo auto show takes turns showing cars and commercial vehicles each year, and the 2003 Tokyo auto show focuses on commercial cars and motorcycles. The Tokyo motor show has a distinctive feature: a variety of small, diverse cars from Japan's local carmakers have traditionally been the main actors in the show. At the same time, various car electronic equipment and technology are also a highlight of the exhibition
Self-cleaning filter features: continuous water supply is carried out in the backflush, and the whole backwash is achieved in every point of the suction net filter. The anti-flushing is only a small local pressure change between the suction nozzle and the fine filter screen, while the movement of the collector and hydraulic cylinder does not affect the normal water supply. At the same time, the amount of water consumed during the backflush is very small, with the flow rate of 300m3/ h. For example, the reverse flushing flow rate is 35-40m3 / h, the anti-flushing time is 7-15 seconds, and the backwash amount is 80-160L
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