This proves that the one-dimensional trajectory amendments mode of ground radar surveillance and progroud fire-control center control is entirely feasible and can achieve low-cost and miniaturization.

由此可见，采用地面雷达导航、由地面火控中心发射指令的一维弹道修正方式完全可行，并可以做到低成本，小型化。

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And the design of household door special requirements must fire door, such as fire control center, archives room, warehouse and other valuables, usually choose a or B fire door.

还有设计有特殊要求的须防火的分户门，如消防监控指挥中心、档案资料室、贵重物品仓库等的分户门，通常选用甲级或乙级防火门。

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Security department immediately organized security guards, define the alert level as explosive or explosives for the center to control the scene, floor district can closed the fire doors;

安全部立即组织保安员，划定以爆炸或爆炸物为中心的警戒线，控制现场，楼层客房区可关闭防火门；

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