This paper introduced its principle and float and proposed a new way to navigate by right key dual menu on courseware design.
并介绍了整个设计的原理和实现流程，提出了通过右键菜单进行课件导航设计的新思路。
2
The structure and makeup of active steering system, the operating principle and operating mode of dual planetary gear mechanism are introduced in detail.
详细介绍了主动转向系统的结构和组成，以及核心部件双行星齿轮机构的工作原理及工作模式。
3
On the basis of practicing, the operational principle and features of dual condensation chamber used for drum water level measurement are presented in detail.