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。
Secondly, a joint distribution policy was designed based on the concept of temporal distance under the framework.
刷新周期是指图中滚动并显示新的竖条的频率。
The refresh interval is how often the graph scrolls and shows a new bar.
反映滚动轴承故障的特征周期信号处于较低频带内，容易被噪声淹没，难以检测。
The fault characteristic periodic signals of the rolling bearing are in low frequency band and often buried in the noise.
在这种鱼道中出现的滚动流将产生波涌，并继续向下传播，而且它的周期性滚动可能会严重危害鱼道。
Tumbling flow is appeared in this fishway which produces wave surge and continues to flow downward and may causes serious damage due to its behaviour of periodic tumbling action.
用制造和安装精度要求不高的链传动取代了原进口设备采用的蜗轮蜗杆传动，采用双端支承方式和滚动轴承，有效地提高了设备的运行周期。
In designing chain drive is applied other than using worm wheel drive as the imported equipment does. Using two-end bearing support will greatly increase the thickener's running cycle.
用制造和安装精度要求不高的链传动取代了原进口设备采用的蜗轮蜗杆传动，采用双端支承方式和滚动轴承，有效地提高了设备的运行周期。
In designing chain drive is applied other than using worm wheel drive as the imported equipment does. Using two-end bearing support will greatly increase the thickener's running cycle.
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