对比国内外常用支架系统的外部结构，分析传统支架的优缺点，给出外部参数可调支架的设计要求。
Compared the external structure of stent system, by analyzing advantages and disadvantages of a traditional stent, we give the designing requirements for stent of controllable external parameters.
这款做工考究的iPad保护套兼具轻便保护罩和可调节支架两种功能。
This elegant iPad case does double duty as a lightweight protective cover and ingenious adjustable stand.
这四个KM5麦克风有一个弹簧可调鼓边缘安装支架，确保了陷阱和汤姆应用的最佳定位。
The four KM5 microphones have a spring loaded adjustable drum-rim mounting bracket that ensures perfect positioning for snare and tom applications.
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