The optical fiber sensor is a kind of device which can monitor change of external environment by testing the characteristics of light. It is based on light transmission in fiber.

光纤传感器是根据光纤的传输原理，通过对光纤传光特性的检测来感测外部环境变化的一种装置。

youdao

youdao

Had we tried to fundamentally change how it departments monitor server rooms, I'm sure we would have failed.

我们曾试图根本性地改变IT部门监测服务器室，但是我确定我们失败了。

youdao

We simply don't have historical records to monitor change on a broad scale.

BBC: Google adds coral reef panoramas to Street View maps

In the face of these accelerating physical, biological and social transformations, there is a need to monitor change, assess impacts and mobilize responses so as to adequately inform adaptation policies and practice.

UNESCO: Global Change in the Arctic and Co-production of Knowledge

He stressed that the investigation is continuing and the bus monitor could change her mind.

CNN: STORY HIGHLIGHTS