We built a safety barrier already. I will put it on this afternoon.

我们已经做了安全防护栏，我今天下午就把它装上。

An Intrinsic Safety Barrier is optional for sensor and cable installation in hazardous rated locations.

内在的安全屏障是可选的传感器和电缆额定危险地点安装。

For hazardous locations, the ultrasonic sensor is rated Intrinsically safe with an optional safety barrier.

对于危险地点，超声波传感器的额定本质安全的一个可选的安全屏障。

The conclusions from the paper can be referred to improve the current structure of safety barrier and the design for the new types of safety barrier.

对改善我国公路桥梁防撞护栏结构及合理设计新型防撞护栏提供了重要的依据。

Forest is the main terrestrial ecosystem, the maintenance of land ecological safety barrier and strategic resources for economic and social sustainable development.

森林是陆地生态系统的主体，是维护国土生态安全的屏障，是经济社会可持续发展的战略性资源。