pull-in frequency

例句：

1. 1.The train's pull-in frequency is high, so it can quickly reach its destination.
   列车的进站频率很高，因此可以迅速到达目的地。
2. 2.The airport has a high pull-in frequency, which means it receives many passengers daily.
   机场的进站频率很高，这意味着它每天接待许多乘客。
3. 3.The new train service has increased the pull-in frequency of this city's transportation system.
   新的火车服务增加了这个城市交通系统的进站频率。