一種需要經(jīng)過(guò)放大才可閱讀的微小圖象。
An image that is too small to be read without magnification.
利用多次垂直掃描來(lái)重顯一幅完整圖象的掃描技術(shù)。電視中使用2：1的交錯率，即每幀分兩場(chǎng)，垂直掃描兩次，一場(chǎng)掃描奇數行，另一場(chǎng)掃描偶數行。
In scanning, the technique of using more than one vertical scan to reproduce a complete image. In television, 2:1 interlace is used, giving two vertical scans(fields) per frame; one field scans odd lines, and one field scans the even lines of the frame.
超聲波心動(dòng)描記器一種用來(lái)顯示詳細的大腦圖象的儀器，利用超聲波發(fā)送和反射的差異來(lái)測試并無(wú)傷無(wú)痛
An instrument that in a painless and noninvasive manner uses the differential transmission and reflection of ultrasonic waves to create a detailed visual image of the brain.
發(fā)送或接收一幅新的快照會(huì )覆蓋前面的圖象。
Send or receiving a new snapshot overwrite the previous image.
