Ultrafine-grained 2J4 hysteresis alloy processed by equal-channel angular process(ECAP), has the average grain size approximate 0.

利用等通道弯曲挤压的方法得到的晶粒平均尺寸大约为0。

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According to the theory of general relativity, the speed and angular momentum of such a large spinning body twists the space and time around it in a process called frame-dragging.

根据爱因斯坦的广义相对论，像银河系这样的巨大自旋物体的速率和角动量在一个称为框架牵引的过程中会扭曲周围的时空。

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Model of self-generation of angular positioning precision during mutual lapping machining process for end-tooth indexing table was built. Simulation results agree with industrial machining practice.

建立了端齿盘对研加工过程中分度精度自生成的模型，仿真结果符合工业加工实际。

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