从测量速度和精度两方面考虑，提出采用圆弧切线外插算法控制激光束跟踪扫描，实现曲面的自适应跟踪测量。
It is that the measurement point can be predicted via the arc extrapolation method and can be adaptive to sense the change of the free-form surface.
显然，您可以编写样式表来扫描整个跟踪输出，查找注释以及对它们进行排序和计数。
Obviously, you could write a stylesheet that scanned through the traced output, found the comments, and sorted and counted them.
如果该值与原始校验和不同，则本次扫描的后续搜索将抛弃这个页面(因为它更改了，不值得跟踪)。
If it's found to be different than the original checksum, the page is discarded from further search in this scan (because if it changes, it's not worthwhile to track).
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