| 1. | Hence only one line of force can pass through each point of the field .
因此电场中任一点只能通过一条电力线。 |
| 2. | No lines of force originate or terminate in the space surrounding a charge .
在电荷周围的空间内，并没有电力线的起点或终点。 |
| 3. | A changed particle moves along the lines of force of a magnetic field, spiraling as it goes .
带电粒子沿磁力线运动时就会发生回转。 |
| 4. | Since the lines of force converge and diverge, there is necessarily a component br .
由于磁力线的收敛和发散，就必然存在一个分量Br。 |
| 5. | In an uniform field, the lines of force are straight parallel, and uniformly spaced .
在匀强电场中，电力线是平行的直线，其间隔是均匀的。 |
| 6. | Lines of force can begin or end inside a region of space only when there is charge in that region .
只有当这一空间区域内有电荷存在时，电力线才能发自或终止于这一空间区域。 |
| 7. | The magnetic lines of force are in effect glued to the interstellar gas, and they follow the clouds in their capricious motions .
磁力线实际上是紧附在星际气体上，并跟随星际云一道作着变化莫测的运动。 |
| 8. | Distribution of lines of force
力线分布 |
| 9. | In general , the closer the lines of force , the stronger the surface tension
一般说来， (磁)力线越密集(靠近) ，表面张力就越强。 |
| 10. | Lines of force density
力线密度 |
