rolling period

After wheel re-pro filing, the wheel wear rate increases which will reduce the wheel turning period. The normal contact stress tends to be stable after wheel wear and is not obvious related to the wear volume around the nominal rolling circle.

车轮经过镟修后，磨耗速率会增加，镟修周期缩短，车轮经过磨耗后法向接触应力趋于稳定，车轮滚动圆磨耗量与法向接触应力无明显关系。

with the same rolling period and amplitude, the effect of pitching on natural circulation is greater than that of rolling.

相同摇摆周期与摇摆振幅条件下，纵摇对自然循环运行影响大；

By simplifying the platform as a single freedom rigid body and spring system, the natural period of heaving and rolling are calculated by determining some parameters from test.

气浮体的自由运动周期采用单自由度弹簧体系来计算，部分参数通过试验确定。

secondly, a joint distribution policy was designed based on the concept of temporal distance under the framework of rolling period strategy.

然后基于时间距离的思想，在滚动周期策略的框架下，设计了两级系统的联合配送策略。

method of planned rolling period of a container yard based on mixture storage

集装箱堆场基于混堆的滚动式计划堆存方法

programming the off-line simulation process and computing the working roll wear in a certain rolling period as scheduled.

编制离线仿真程序，计算某一轧制周期工作辊磨损。