AC power is the greatest invention of human history. Most of the items we use in
The waterflow indicator is a visual mirror instrument valve. It is suitable for
Current relay is an electronic control device that has a control system (also kn
Motor (Motor) is a device that converts electrical energy into mechanical energy
The plastering machine is a machine on the indoor wall or the roof ceilings.The
The mining area refers to the construction area of ??coal mining.When the excava
The roller is a kind of engineering machinery.Suitable for high -level highways,
The damper is a device that provides exercise resistance and reduces exercise en
The universal material of the round saw chip mainly has the cutting off of low h
Boring Machine is a machine used to jump the alleyway on the ground.There are ma
The crane refers to the multi -action lifting machinery of the weight -bearing a