background of mark

基本解释

Hopper became one of the first programmers of the Mark I digital computer, which is the machine visible in the background of this photograph.
Hopper也成爲第一批Mark I電子計算機的工程師。背景圖片中的計算機就是Mark I。
The algorithm can quickly and precisely mark the moving object and its trail by functions of image enhancement, morphological operation, and interframe background subtraction.
該算法運用圖像增強、形態學操作、圖像差分法，能快速準確標注出移動的物躰及其移動軌跡。
The Beijing kettle bears a four-character Qianlong mark, but the delicate painting style and the subtlety of the background to the panels suggests that it was made early in the reign period.
北京故宮提梁壺署乾隆四字楷書款，觀乎其細膩的畫工及淡雅的背景，應是乾隆初年的作品。

Last December, the FBI recorded a record number of 2.78 million background checks for purchases that month, surpassing a 2.01 million mark set the month before by about 39 percent.
FORBES: Disarming Realities: As Gun Sales Soar, Gun Crimes Plummet