The multiscale structure existing in metallurgical process was illuminated and the concept of space-time multiscale and its foreground were briefly introduced.
笔者以炼钢为例，说明冶金过程中存在着多尺度结构，简要地介绍了时空多尺度概念以及它在冶金领域的应用前景。
A key concept of General Relativity is that gravity is no longer described by a gravitational "field" but rather it is supposed to be a distortion of space and time itself.
广义相对论的一个关键概念就是，不再用引力“场”来描述引力，而是用空间和时间本身的畸变来表述。
On the basis of analyzing time sequence concept, logic and application, puts forward the space sequence concept, applies the wavelet analysis on space sequence concept.
分析了时间序列的概念，在逻辑和应用的基础上，提出了空间序列概念，并将小波分析应用于空间序列概念。
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