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- The pulse width of the backward scattered radiation decreases with the increase of the electron’s initial energy, and the collimation of the scattered radiation becomes better. 短脉冲激光条件下得到的后向散射光的频率上移与长脉冲激光条件下得到的后向散射光的频率上移是完全一致的，同时发现随着入射电子初始能量的增加，散射光的准直性越来越好，后向散射光脉冲的脉宽越来越短。
- He lined out for home without a backward glance. 他头也不回，急忙往家里走去。
- Small villages scatter at the foot of the mountain. 村庄零零落落地散布在山脚下。
- When the tree falls, the monkeys scatter. 树倒猢狲散。
- This part of the country is still backward. 这个国家的这个地区仍很落后。
- In some cities housing conditions went backward. 某些城市的住房条件越来越差。
- The teacher was patient with backward children. 那位老师对迟钝的学童十分耐心。
- He looked backward over his shoulder. 他回头向后看。
- backward scatter 后向散射
- A scatter of applause reached him when he ended his speech. 演讲结束时他听到稀稀拉拉的掌声。
- She looked backward over her shoulder. 她回头往後看。
- Sheila is very clever but rather backward in expressing her ideas. 希拉很聪明，然而在表达思想时却有些腼腆。
- Although he is clever, he is backward in giving his views. 他虽然很聪明，却不善发表他的意见。
- Frank was so backward that he hesitated to ask her to dance. 法兰克非常腼腆,不好意思请她跳舞。
- He had a firsthand taste of life in backward mountainous areas. 他直接体验过落後山区的生活。
- I used to scatter in the cinema last year. 我去年很少看电影。
- The stars scatter when the moon is clear. 月明星稀。
- The white clouds mass and scatter. 白云舒卷。
- Don't scatter your money around. 别到处挥霍.
- A backward flow of water, as from the action of oars. 反流，逆流向后流的水，如由浆的划动引起
