Under the design conditions, the wind pressure is 30kPa ~ 200kPa or the compress
Electric energy meter verification instruments are widely used in power, metallu
High-Frequency Welding is based on solid resistance heating.During welding, the
555 timer is a mixed -scale integrated device combining simulation and digital f
Precautions for loading machine-vigilance-small common sense: The article has in
The Y in the YC rubber cable represents rubber insulation, C represents a heavy
GRINDER (GRINDER, GRINDING MACHINE) is a machine tool that uses abrasives to gri
The device of the floor -in sensor, called the weight sensor, is a device that t
The switching voltage pressure supply generally refers to the switch -type volta