coon.鸽叫声v.咕咕地叫；(温柔而轻声地)说情话abbr.首席运营官(=Chief Operating Officer)cooeen.喂(澳洲土人的招呼声)v.作喂和尖锐的呼喊声

1. On the other hand, it can also be expressed in the terms of the translation gauge field strength and therefore is covariant under general coordinate transformations.
   同时，引力场的能量动量又可以表示为平移规范场强的二次齐式因而在广义坐标变换下协变。
2. The equations of the electric field of elliptic linear electric charge are solved by using coordinate transformation, and some discussions on them are given.
   摘要通过坐标变换求出了椭圆形线电荷的轴向场强及电位分布规律，并对结果进行了分析讨论。