track cycle

According to the phase trajectory of along-track drift, the switching function with the oblique lines was designed in order to converge the initial errors, and the limit cycle was analyzed correspondingly.

分析了构形沿航迹漂移的相轨迹，针对单开关门限控制律不能对初始误差收敛的问题，设计了倾斜开关曲线控制，并分析了相应的极限环参数。

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Cycle track stocks in the coal, nonferrous metals, real estate, insurance and other plates.

在周期股上跟踪煤炭 、 有色 、 房地产 、 保险等板块.

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Ms Trevor, whose mother Dr Christine Read works for Bayer, said she had skipped periods on her old pill but Yaz Flex with its digital dispenser made it easier to keep track of where she was in her cycle.

特雷弗说，她服用之前的避孕药也可以减少月经次数，但Yaz Flex配有药剂数字分发盒，这让她能很清楚自己的周期。她的母亲克里斯汀-里德就在拜尔公司工作。

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Based on the characteristics of single-track railways, this paper sets up a taxis model for the train diagram of single-track railways, and puts forward the timing-cycle iterative optimizing method for drawing goods train running lines of train diagrams.

根据单线铁路列车运行图的特点，建立了单线铁路列车运行图排序模型，设计了运行图货物列车运行线铺划的时间循环迭代优化方法。

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A Timing-cycle Iterative Optimizing Method for Drawing Single-track Railway Train Diagrams

单线列车运行图铺划的时间循环迭代优化方法

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