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.
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