The grass cutting machine is also known as a weakening machine, a grass -cut mac
Stabilized Voltage Supply is an electronic device that can provide stable AC pow
The tong -shaped current meter is combined by the current transformer and the cu
The expansion screws are a kind of parts and fasteners commonly seen in construc
Electricity eliminations, that is, removing static equipment, is often used in i
The iron core is the main magnetic circuit in the transformer.It is usually stac
The low -frequency signal generator uses a single -chip micro -shaped synthetic
The greenhouse is also called the warm room.It can transmit light, heat preserva
Informal delay time relay is used in the secondary loop protection and automatic