The application of the PLC in the automation system of sluices,which are in the hydroelectric plant is introduced.
介绍了PLC在水电厂泄水闸门控制系统中的应用。
Fracture types include drainage fractures, structural fractures, interlayer fractures and microfractures in grains.
发育的裂缝类型有泄水缝、构造缝、层间缝和颗粒内微裂缝等类型,其中泄水缝和构造缝较为发育,颗粒内微裂缝次之。