求翻译：在电媒技术中，大量存在有相对运动的设备，如果按公式（2-1-3）及相对论原理进行分析，就不一定必要了。因为这些设备中的运动速度远小于光速。相对论中所阐明的影响是微不足道的。这样可以近似地认为：是什么意思？

Electric Media art, a large number there is relative movement of the equipment, if analyzed by the formula (2-1-3) and the principle of relativity, it is not necessarily necessary. Because the speed of movement of these devices is far smaller than the speed of light. Set forth in the relativistic ef

In media technology, there are a lot there is a relative motion of the device, if the formula (2- 1- 3) relativity theory and analysis, it is not always necessary. Because of these devices at speeds much less than light speed. Special Relativity in which it is stated the impact is negligible. This c

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In digital technology, a large number of relative movement device is present, if according to the formula (2-1-3) and the principle of relativity analysis is not necessary. Because the velocity of these devices is far less than the speed of light. Relativistic effects is set out in negligible. It ca

In the dielectric technology, the massive existences have the relative motion equipment, if (2-1-3) and the relativity principle carries on the analysis according to the formula, not necessarily was essential.Because in these equipment velocity of movement is smaller than far the speed of light.In t