As a physical structure, static, as well as an happening, volatile.
可以作为静态的物理结构，也可以是动态的、不稳定的。
2
First, this thesis introduces the basic structure, static characteristic, operation principle of Doubly Salient Electro-Magnetic Motor and Generator.
本文首先简要介绍了电励磁双凸极电机的结构、数学模型以及电动和发电工作的原理。
3
The influences of ionic substitution on the structure, static magnetic characteristics and microwave absorption properties of hexaferrite were summarized in detail.