放射形专用线非直达车流取送车问题属于一类组合优化问题，影响因素较多。
The problem of collecting and delivery shunting of non-through wagon flow on the actinoid private line belongs to a kind of the combinatorial optimization problems.
也可走老成渝公路，但弯道较多，车流、人流量较大，需中速谨慎驾驶，行车时间约需2小时30分钟。
Can also take the old Chengdu-Chongqing Highway, but turn more traffic, more people flow, to be cautious medium-speed driving, travel time takes about 2 hours and 30 minutes.
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