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Load and bus tires usually refer to the rim of the rim 18 to 24 inches in diameter, with a section width of 7 inches and above, truck, dump trucks, special purpose and trailer, etc. The road is relatively complex, has the good asphalt, also has a poor gravel, mud, muddy road, snow road, even without the road conditions, driving speed is generally not more than 80 km/h. 4. Construction machinery tires, construction machinery tires is installed on the specificity operation of engineering machinery vehicles, such as loader, bulldozer, excavator, flat machine, roller and land regarding the rig, etc. The speed is not high, but the pavement condition and the load performance are demanding. The tyres are mainly used in the skew structure, but the French rice wheel (cantonese, mandarin is called Michelin) is also used in the meridian structure. The classification can be divided into two categories: standard tire and wide base tire.
Hydro turbines, the oldest and also the mostly used renewable energy source, hold the highest efficient of power conversion process. The potential head of water is available next to the turbine, so there aren't any energy conversion losses, exactly the mechanical and copper losses inside the turbine and generator and the tail end loss. The efficiency is inside the range of 85 to 90 %.
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