The mixing blade is fixed on the inner wall of the mixing tank or on the mixing ..
The wheel hub is the rotating part of the wheel core connected by the steel colu..
The audio frequency is extremely high now, and it is used in many occasions or a..
The combustion furnace uses a high-voltage, high-frequency oscillating circuit t..
A motor car is a vehicle equipped with a power device in a rail transit system. ..
Valves are pipeline accessories used to open and close pipelines, control flow, ..
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