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 no commutating spark, no cleaning and maintenance after use; under the condition of mechanical strength, the speed of the motor can be increased, the specific power can be increased, the volume and weight can be reduced; It's easier to make, cheaper to make. It should be emphasized that the induction motor driven by frequency converter can be realized in theory. Full speed range of stepless smooth speed regulation, which can be achieved in the full speed range of stepless speed regulation. It is to be expected that during the search phase, if the control system allows, super-low speed navigation. After capturing the target, the speed of the mine can be increased quickly to track and destroy the target. A new type of electric propulsion system can be developed by using the technology of variable frequency and variable speed asynchronous motor and the improvement of the discharge performance of the existing power battery. The system can further improve the speed and range, more importantly, it can realize stepless speed regulation in full speed range and greatly enhance the maneuverability of navigation. In view of the above-mentioned reasons, the world powers have carried out research on this subject and achieved certain results.

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.真切的生活，真心的笑容，真摯的情感，真情的流露。面對真實，我無須掩飾。幸福，希望，成功，歡笑，掀起晴日的波濤;傷感，失落，痛苦，悲傷，滴落陰霾的霧雨。平凡如我，獨守著殘缺的孤傲，在高聳的山崖吹風。像一只翅膀受傷的鷹，渴望翱翔。文字，拯救靈魂;成熟，需要代價。誰也不是誰的誰，誰也不能傷了誰�？释秩绾�?傷痛又何妨?   

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57310001-CC DSPC171

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