optical pick-off的用法和样例：
例句
- Optical sensors are used to determine the position of each component of the kit, and robotics are used to put them into the correct position.
光学传感器是用来判断的立场，每个组成部分的套件，和机器人技术被用来放到正确的位置。 - An image forming apparatus includes an image carrying member, an image forming mechanism, an optical sensor, and a controller.
一种图像形成装置，包括图像承载体，图像形成机构，光学传感器控制器。
