zero gradient meaning in English

零梯度

Within a given time a train travels from one station to the next along level track or non - zero gradient track , it is desirable to find a feasible control strategy that minimizes fuel consumption
列车沿水平或坡度轨道从一站驶向下一站，要求在给定的时间内完成行程并使得能耗最小。
When the self - adaptive procedure is combined with the genetic algorithm ( ga ) , a complete algorithm of adjusting parameters and implementing calculation is formed . this algorithm is suitable for both level track and non - zero gradient track
同时我们将上述自适应的计算过程与现代优化方法?遗传算法相结合，得到列车控制问题的参数调整与计算的完整的算法，该算法既适合水平轨道又适合带有坡度的轨道。
It should be pointed out that the constructive algorithm does not depend on the nature of the strategy determined by parameters , and that the constructive algorithm is also suitable for both level track and non - zero gradient track theoretically
本文还给出一种基于迭代序列的构造性算法，该算法调用了基本计算过程但不需要确定参数对入和。所对应的运行方案的本质，从理论上来说它也是既适合水平轨道又适合带有坡度轨道的。