The research shows: the ultrasonic effect on the liquid, rupture of each bubble in liquid will produce great shock wave energy, equivalent to several hundred degrees and instantly ...
X month XX day, blue skies, and wind slowly. XX kiloton crawler crane body draped in safflower, hundreds of technical elite, the backbone of production under the eyes, majestic-loo...
domestic steel manufacturing continued expansion trend, help to strengthen the market to the economic rebound. Liaocheng hot rollin...
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