Before you do that you need to set-up a co-ordinate system.

在做这些之前你需要先建立一个坐标系。

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We, in this paper, first of all, transformed acceleration and force of special relativity, then further studied acceleration and force property under different inertial ordinate system.

本文首先对加速度和力进行了狭义相对论变换，然后研究了加速度和力在不同惯性坐标系中的性质。

youdao

We, in this paper, first of all, transformed acceleration and force of special relativity, then further studied acceleration and force property under different inertial ordinate system.

本文首先对加速度和力进行了狭义相对论变换，然后研究了加速度和力在不同惯性坐标系中的性质。

youdao