In the handheld scanner, a small wire coil creates an oscillating magnetic field, which makes the glass sliver in the sticker vibrate in sympathy.
而在手持扫描仪内部的小线圈创建的一个振荡磁场使得在贴纸内的玻璃棉条同时产生震动。
Handheld scanner
原声例句
科学60秒 听力 2013年11月合集
科学60秒 听力 2013年11月合集
But an invention by physicists at Auburn University could make testing for bacteria as simple as slapping on a sticker and waving a handheld scanner.
但奥本大学物理学家们的一项发明可能使测试细菌变得像撕下贴纸及挥舞手持扫描器一样简单。
中文百科
影像扫描仪 Image scanner
（重定向自Handheld scanner）
影像扫描仪，常简称扫描仪，是一个能够把相片、印刷文档或手写文档等影像，或装饰品等小对象扫描、分析并化成数码影像的器材。
现在大部份影像扫描仪都是桌面扫描仪的变种。以手动作扫描的手提扫描仪曾一度流行，但由于很难获得理想影像质素，现已被淘汰。这些扫描仪都使用电荷耦合器（Charge-coupled device，CCD）作为影像感应器，而鼓式扫描仪则采用光电倍增管（Photomultiplier Tube）作为影像感应器。影像扫描仪在我们日常生活中十分重要，随处都有它的存在。
其他种类的扫描仪包括planetary扫描仪，可为书籍及文档拍摄影像，及激光距离扫描仪（Laser Range scanner），可制作立体三维空间对象的模型。
英语百科
Image scanner 影像扫描器
（重定向自Handheld scanner）
In computing, an image scanner—often abbreviated to just scanner, although the term is ambiguous out of context (barcode scanner, CAT scanner, etc.)—is a device that optically scans images, printed text, handwriting, or an object, and converts it to a digital image. Commonly used in offices are variations of the desktop flatbed scanner where the document is placed on a glass window for scanning. Hand-held scanners, where the device is moved by hand, have evolved from text scanning "wands" to 3D scanners used for industrial design, reverse engineering, test and measurement, orthotics, gaming and other applications. Mechanically driven scanners that move the document are typically used for large-format documents, where a flatbed design would be impractical.
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