As the century broke over America, there was another really tough technical problem receiving huge amounts of attention from small-time inventors across the land: airplanes.
正值世纪交替之际，在美国，一个非常棘手的技术问题正饱受全国三流发明家的关注：飞机。
The technical problem-that the gliding rotary arm after braking is smaller than a small angle-is solved through internal contracting brake device designed by using electromagnetic circuit.
利用电磁电路设计的抱闸装置，解决了回转臂系统刹车后，滑动小于某一小角度这一技术难题。
The technical problem to be solved is to convert the light of a small-angle area of an LED chip to a large-angle area so as to achieve the effect of light equalization.
所要解决的技术问题是将LED芯片小角度区域光转换到大角度区域，以达到均光的效果。
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