The switch control method includes the double thrust ( DT) switch, the switch between phase plane control ( PPC) method and quasi-slide control ( QSC) method, and the angle feedback ( AF) switch.
该切换控制方法主要包括双重推力水平切换,相平面控制律与准滑模控制律切换和角度反馈切换。
This PPC search engine service has become the main source of revenue for the company.
这种竞价排名服务已经成为搜索引擎公司最主要的收入来源.
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