Hans Holzer, ghost hunter, died on April 26th, aged 89.
汉斯•荷尔泽，驱鬼师，四月廿六日卒，享年八十九岁。
Mr Holzer was keen to tell Americans that ghosts were nothing to be frightened of.
菏泽尔先生热衷于跟美国人说幽灵没什么好怕的。
"He compels us to learn more, but there's always something we're not going to get," Holzer said.
“他迫使我们更多地去了解他，可总是有些东西我们无法理解”，霍尔泽如是说。
Holzer algorithm has clear physical concept and simple operation.
霍尔哲算法物理概念清楚，运算简便。
At the same time using Holzer sensors will be converted into pulse frequency motor speed feedback to the MCU, realize the speed closed-loop control, to achieve speed detection.
同时利用霍尔传感器将电机速度转换成脉冲频率反馈到单片机中，实现转速闭环控制，达到转速检测目的。
At the same time using Holzer sensors will be converted into pulse frequency motor speed feedback to the MCU, realize the speed closed-loop control, to achieve speed detection.
同时利用霍尔传感器将电机速度转换成脉冲频率反馈到单片机中，实现转速闭环控制，达到转速检测目的。
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