Some trackers use optical scanners to see the blood actually pumping through your capillaries.

有些追踪器使用光学扫描仪来观察血液流过毛细血管的情况。

The data is captured by an optical scanner.

【capture】该数据是通过光学扫瞄器记录下来的。

More states have been turning to machines with a paper trail or optical scanners, which read paper ballots that the voter fills in with a marker.

越来越多的州转向使用带有纸质记录或光学扫描仪的机器了，这些机器能够读取选民用标记填写的纸质选票。

An air blower re-sorts the seeds by density, an assortment of sieves filter them by size, and an optical scanner sorts by color.

鼓风机按密度重新分类种子，各种筛子按大小过滤种子，光学扫描仪按颜色分类。

In Florida, legislators rewrote state laws, switched to paper ballots and optical scanners (no more butterfly ballots or hanging chads), and mandated automatic recounts for races with margins of half a percentage point.

佛罗里达州的议员重修了州法律，投票改用纸质选票和光学扫描仪（从此再也不会出现所谓的“蝴蝶选票”或者“孔屑废票”了）还对用误差范围为0.5%的机器重新统计选票做出了硬性要求。