Their arrangement puts two sensors at each intersection: One measures incoming flow and one measures outgoing flow.
按照他们的安排，每个交叉路口设置两个感应器：一个测量驶入车流量，另外一个测量驶出车流量。
Their arrangement puts two sensors at each intersection: One measures incoming flow and one measures outgoing flow.
按照他们的安排，每个交叉路口设置两个感应器：一个测量驶入车流量，另外一个测量驶出车流量。
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