But sunspot Numbers are running at less than half those seen during cycle peaks in the 20th Century.
但是太阳黑子的数量少于二十世纪的太阳活动周期峰值的一半。
Based on the brake characteristic of water-cooling disc brakes during going down, the FEM model of thermal analysis during cycle braking is established.
基于盘式刹车在下钻过程中的制动特性，建立了水冷式刹车盘下钻过程中循环制动的有限元分析模型。
Based on the brake characteristic of water-cooling disc brakes during going down, the FEM model of thermal analysis during cycle braking is established.
基于盘式刹车在下钻过程中的制动特性，建立了水冷式刹车盘下钻过程中循环制动的有限元分析模型。
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