小型无人直升机
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micro-unmanned helicopter 微小型无人直升机
unmanned micro helicopter
无人微型直升机
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The studies of micro-unmanned helicopter in our country are at the beginning.
目前，国内对于微小型无人直升机的研究仍处在起步阶段。
youdao
The video was shot on Friday by an unmanned micro-helicopter, the Tarantula-Hawk, called the T-Hawk for short.
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