在这之后，Google会每隔一段时间下载这些文件，确保使用最新的信息来计算路线。
After that, Google will periodically download the files to ensure that the latest information is used to calculate routes.
这可以通过几个步骤实现—— 首先是地理编码，接着是标点，再通过标点计算路线，最后获得该线路的事件信息以及交通信息。
This can be implemented in several steps – geocode start, end and via points, calculate route, get events information around the route, get traffic information for a route.
对大量仿真计算结果进行统计分析，可以得到总工期及关键路线的概率分布结果，为施工管理提供更多的信息。
After enough turns of simulation, the distribution of the total work period can be determined, at the same time the critical path can be found in the probability concept.
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