Extensity is one of the basic attributes of architecture.

空间性是建筑的基本属性之一。

However, extensity can not solve the whole problem of research on regional spatial structure.

然而，仅有空间性并不解决区域空间结构研究的全部问题。

First, it has gathering, management, analysis and export many kinds of geographical information, it has EXTENSITY and DYNAMICS.

第一，具有采集、管理、分析和输出多种地理信息的能力，具有空间性和动态性。

But through technique alone to the extensity even existence cannot be found alone There isn't any or many or much meaning maybe limited cases I don't care.

当时仅仅通过技术，连存在都难以实现，如果这样，有技术也没有什么意义了，或许我举的例子不多。

Most of studies overlooked sleeve type ejection gun and the effect of pressure area changes, simultaneously the models of ejection gun were lack of extensity.

以往研究中对多级弹射筒和压力有效作用面的影响重视不足，并且所建模型通用性差。