通常工业机器人的手臂虽然看起来粗糙，却是能完成某一特定任务的得力工具，比如在电路板上安装小零件、给轿车上漆等。
THE arm of a typical industrial robot is a crude-looking but functional implement designed for a single job, such as placing tiny components onto a circuit board or painting a car.
拆卸零件很容易，但最好是用剪刀或Xacto刀（注：美工刻刀的一种）来去除粗糙的边缘...
It’s easy to remove them, but it’s best to take a pair of sharp scissors or an Xacto knife to remove any rough edges.
影响零件质量的一个重要方面是几何精度，它包括尺寸精度、形位精度、表面粗糙度和波度等。
An important factors of parts quality is geometrical accuracy, includes size accuracy, form accuracy, surface rough degree, wave degree etc.
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