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环行道第二和第三环建成后,即可对总重1万t,日走行500km以上的重载列车进行试验,环行道试验比运营线路上实地试验快7～9倍,并且所得车辆及其零部件在现行和将来运营条件下的试验数据是足够精确的。苏联铁路三十年代开始用自动车钩替换链子钩。环行道建成不久就开始进行了自动车钩方面的试验,直到今天还为不断改进车钩缓冲装置进行试验研究。
After the completion of the second and third ring roadways, heavy-haul trains with a total weight of 10,000 t and a daily run of more than 500 km will be tested. Round robin tests are 7 to 9 times faster than on-site tests on operating routes and the resulting vehicles and / The test data for its components under current and future operating conditions is accurate enough. Soviet railway began to replace the chain hook with automatic coupler in the thirties. Shortly after the completion of the roundabout, tests were carried out on the automatic coupler, and experimental studies on the continuous improvement of the coupler buffer are being carried out today.