这是最最基本的动作，不过却并不容易飞。
This is one of the most basic maneuvers, but not easy to fly well.
图 3 演示了 Rails 和 Struts 基本的动作层次结构。
Figure 3 illustrates a basic action hierarchy for Rails and Struts.
伺服系统入门。理解伺服系统的构成、学习理解基本的动作原理和控制的特性。
Servo system started. Understanding of the composition of the servo system, learn to understand the basic principle of operation and control features.
应用推荐