| 1. | Note that it does not have the same direction as the velocity vector .
要注意它的方向与速度矢量的方向不同。 |
| 2. | The direction of the electric field vector is indicated in each picture .
每张照片上都标出了电场矢量的方向。 |
| 3. | The dot product of a pseudovector and a vector is called a pseudoscalar .
一个赝矢量和一个矢量的标识称为赝标量。 |
| 4. | The magnitudes of the rectangular components of a vector are easily computed .
一个矢量的正交分量的大小是很容易计算的。 |
| 5. | It is interesting and enlightening to consider the derivative of a vector .
这对研究矢量的导数来说是重要的，而且富有启发性。 |
| 6. | Polar vectors and axial vectors are distinguished by their inversion properties .
极矢量与轴矢量的区别在于它们的反演性质不同。 |
| 7. | If the wheel is rotating counterclockwise, its angular-momentum vector is directed eastward .
如果轮子是逆时针方向旋转，其角动量矢量的方向朝东。 |
| 8. | If the line segment represents a vector, its projections are called the components of the vector .
如果线段代表一个矢量，其投影就叫做矢量的分量。 |
| 9. | In every case, then the vector force equals the product of the mass and vector acceleration .
因此在所有情况下，力矢量等于质量和加速度矢量的乘积。 |
| 10. | When the end of the electric field vector travels in an ellipse, the light is elliptically polarized .
电场矢量的末端沿一椭圆移动的光叫椭圆偏振光。 |
