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1·We revised frequency spectrum functions by using weighting factor - the distance between direct component and alternating component, and improved the acuity of focus measure curve.

提出用交流分量到直流分量的距离作为加权因子对频谱评价函数进行改进，有效地提高了对焦评价曲线的灵敏度。

2·A new method to detect rotor cage fault of induction motor is presented, which monitors if the output power signal comprises a direct component and an alternating component or only a direct component.

通过判断电动机输出功率信号中是含有一个直流分量和一个余弦分量还是仅含有直流分量，判断鼠笼转子有无故障，提出了一种感应电机转子故障检测的新方法。

3·The drive tool component (100) includes alternating flutes (104) and lobes (106) and has a conical section (108).

驱动工具部件(100)包括交替的凹槽(104)和凸齿(106)，并且具有锥形部分(108)。

4·Because inorganic thin film EL has no blue color component and must work in alternating current with high voltage up to 100V, fabrication of color super-thin displays will be difficult;

由于无机薄膜EL缺乏高亮度蓝基色成分以及驱动电压是1 0 0V左右的交流，难于制成低压彩色超薄显示器；