small half circle

The paper briefly analyzed some problems most frequently occurred in the processing and measurement of big diameter small half circle parts, and suggested some concrete solutions.

结合在制造配件过程中遇到的大直径小半圆孔加工和测量方面的问题进行了简单的分析，提出了具体的解决方案。

Finally, the clutch model is verified through an experiment that the end of manipulator runs along a space half circle trajectory in small range, and the advanced compensation methods are proposed.

最后，通过一个半圆圆弧轨迹跟踪试验，验证了在小范围运动的条件下该调速模型的正确性，并为轨迹误差补偿提出了改进方案。

Half-circle ears, small noses pointed outwards, a pair of eyes like two black pearls, chubby bodies, round head, all make them very lovable.

半圆形的耳朵，小小的鼻子向前翘着，一双眼睛像两颗黑珍珠，胖乎乎的身体，圆圆的脑袋，让人喜欢得不得了。