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工作空间的研究是平面闭链机器人的基本问题之一。
Study of workspace of plane closed-loop robot is one of basic problems.
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空间链道非齐部卫星通信网络的闭键。
Space communication link is the key of satellite communications.
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空间链道非齐部卫星通信网络的闭键。
Space communication link is the key of satellite communications.
youdao