The advantages of coated cemented carbide tool in dry milling of high-strength steel are demonstrated, and the workpiece surface roughness reaches the level of semi-finishing grinding.
试验结果表明：涂层刀片干铣削高强度钢的加工性能优异，工件加工表面质量达到半精磨水平。
The lake water level reduces, the water surface reduces even dry.
湖泊水位降低，水面缩小甚至干涸。
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