In general relativity, time is considered a dimension like height, width and depth, creating a four dimensional universe called space-time.

在广义相对论中，时间被看作和长宽高一样的维度，并与它们构成了一个四维宇宙—被称作时空。

youdao

The four dimensions are the management key factor dimension, the management field dimension, the management space dimension and the management time dimension.

四维为管理要素维、管理领域维、管理空间维、管理时间维。

youdao

The four-dimensional space-time of special relativity is augmented with a fifth dimension to take into account the gauge transformation of the electromagnetic potentials.

本文从电磁势的规范变换出发引入第五维空间和一个新场量。

youdao