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- Magnetic lines of force do exist though invisible. 磁力线虽然看不见，但确实存在。
- The lines of force of a magnetic field. 磁力磁场的磁力线
- Down the lines of force he plunges, until he is on the surface. 他扎进了一条能量线，直达地表。
- lines of force density 力线密度
- You have chosen the wrong direction of the magnetic line of force. 你把磁力线的方向弄反了。
- 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。
- 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。
- 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。
- 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。
- When drawing diagrams of magnetic fields it is usual to put arrow-heads on the lines of force to show which way the force acts on a N pole. 当画磁场示图时，通常在磁力线上画一个箭头表示该力作用于北极的方向。
- It has been suggested that birds can sense the magnetic lines of force stretching from the north to the south magnetic poles of the earth . 有人提出：鸟能感觉到从地球北极通向南极的磁力线。
- 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。
- 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。
- Participation in tender is in our line of business. 参加投标属于我们的业务范围。
- 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。
- A long line of car is unable to pass that road hog. 一长串的车子无法超越那个挡道的汽车驾驶。
- How do you get start in that line of work? 你是怎么开始干那一行的？
- Magnetic lines of force will, whenever possible, travel through iron or other magnetic materials. 磁力线只要有可能就会通过铁或其他磁性材料。
- Dispersion of forces led up to the defeat. 分散兵力是导致失败的原因。
- I do not want to be in the boss line of fire today. 今天我不想遭到老板的非难。
