根据超声波测距原理，提出一种基于超声测距技术的电动轮椅车检测障碍物、避障的新方法。

Based on ultrasonic measuring distance technology, a new method of detecting obstacle and giving a wide berth used in electric wheelchairs is presented.

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挡、避是主要的防守技术，通常防守中紧跟反还击。

The parry is the main defensive skills, often followed by the counter-riposte.

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最重要的防守技术是挡避，通常紧跟着是还击。

And the most important defensive skill is the parry, which is often followed by counter - riposte.

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