minimum control

Taking the minimum control energy reentry trajectory with fixed terminal time and the minimum total heat load reentry trajectory as examples, some key problems such as parameterized method were discussed in detail.

以终端时间固定的空间最小控制能量再入轨迹和终端时间自由的平面最小热载再入轨迹为例，详细讨论了遗传算法用于再入轨迹优化设计所需要解决的一些关键问题。

The details including: the application types of road crossing of town arterial road and traffic management mode; the standard of minimum control spacing of road crossing and road access; access management technology; access-point examination and approval system and so on.

具体包括：城镇群连接道路平面交叉口的适用类型和交通管理方式；平面交叉口和出入口最小控制间距标准；出入口接入管理技术；出入口审批制度等。