Below 417 ℃, cobalt is in dense - hexagonal structure, it has lower frictional coefficient and sound resistance.
钴在417℃温度以下, 为密排六方结构, 具有低的摩擦系数,而具有很好的耐磨性.
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Specially used for elevator emergency brake, with characteristics of high frictional coefficient and mechanical strength.
产品主要用于电梯紧急制动装置, 其特点是摩擦系数高,机械强度好.
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The film pressure, end leakage flow - rate and frictional coefficient of misaligned journal bearing were calculated.
计算了轴受载变形导致轴颈倾斜情况下,轴承的油膜压力 、 端泄流量和轴颈摩擦因数等.
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The method of frictional coefficient is properlyfrictional force of designed path of later horizontal wells.
准确地估价摩阻力对水平井钻井与完井的设计和施工都有重要的指导作用.
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