光电扫描仪

例句：

1. 1. The new scanner is much faster than the old one.
   这款新扫描仪比旧的快多了。
2. 2. The engineer used a scanner to read the blueprints.
   工程师用扫描仪读取蓝图。
3. 3. The scanner was used to detect defects in the metal parts.
   扫描仪被用来检测金属部件的缺陷。