传统的机器人手臂仅含有类似于单关节肌的执行器，而生物的手臂不仅含有单关节肌还含有双关节肌。

Conventional robot arm has only actuators similar to mono-articular muscles, though animals arm has not only mono-articular muscles but also bi-articular muscles.

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传统的机器人手臂仅含有类似于单关节肌的执行器，而生物的手臂不仅含有单关节肌还含有双关节肌。

Conventional robot arm has only actuators similar to mono-articular muscles, though animals arm has not only mono-articular muscles but also bi-articular muscles.

youdao