采用PI调节器加极点的方式，设计出电压环调节器。
Voltage controller was designed by adding a pole to the PI regulator.
文中设计了一种加扼流环的圆锥喇叭来作为抛物面的馈源，实现低成本的高增益、低旁瓣的收发天线系统。
A corrugated conical horn antenna with high-gain and low-sidelobe feeding the paraboloidal reflector antenna to reduce the cost is designed.
本文介绍了含有表面环向裂纹的内压简体及大型管道采用轴向加弧形务板与钢丝缠绕的止裂、抑爆设计原则及设计方法。
The paper presents the design criteria and method for arresting crack and burst of the internal pressured vessels of big pipes with circular surface crack by arched strip and wound wire.
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