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1·The transducer is a small hand-held device that resembles a microphone, attached to the scanner by a cord.

该传感器是一种小型手持设备，像一个麦克风，通过连接线连接到一个扫描仪。

2·When the tagged cow is shipped out, an inspector can use a hand-held scanner to retrieve the cow's information.

但带有标签的牛被运出时，检查员可以通过手持扫描器获取牛的信息。

3·Optimal solution 3300 is an inexpensive, can replace the CCD hand-held laser bar code scanner products.

优解3300是一款价格低廉、可取代CCD产品的手持激光条形码扫描器。