工业机器人由哪几部分组成？各部分的作用分别是什么？
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工业机器人的机械系统总体设计主要包括哪几个方面的内容?
Which script is an ancient script that mainly appeared on the bronze vessels during the Warring States period and pre-Qin times?
A. the regular script
B. the seal script
C. the official script
D. the running script
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