使飞机进离港航班的时间在一时间段内达到最小.-aircraft departing flights into time in a specific period of time to achieve the minimum.

电子监控拍照管理系统。可以随时得到各时间段的交通情况，十分有用-Electronic surveillance camera management system. Time traffic conditions can be very useful

径向轴承挤压计算，给定偏心距和变化的载荷，计算在一个时间段内各个时刻的偏心距、膜厚、轴心移动速度和挤压速度-Radial bearing extrusion calculated given eccentricity and variation of the load calculated in a period of time each time the eccentric distance, thickness, axial moving speed and the extrusion sp

将多个时间段的小excel数据，合并生成一天的大excel数据。然后转化UTC时间为北京时间(The small Excel data of multiple time periods are combined to generate a day's large Excel data. Then the UTC time is converted to Beijing time)