To avoid such fragments and show the whole picture, the System Context must be propagated.
为避免出现这种碎片并显示完整的关系，SystemContext必须被传播出去。
The results show that: the whole bit wear process can be divided into three phases;
发现钻头的整个磨损过程可分为3个阶段；
The results show that: the whole bit wear process can be divided into three phases;
发现钻头的整个磨损过程可分为3个阶段；
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