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- The ratio of the flux emitted within the solid angle defined by the beam spread, to the bare lamp flux. 由光束角限定的立体角内辐射出的光通量与裸光源光通量之比。
- The merit can be realized with the aid of the beam delivery system, whose functions are energy adjustment, energy modulation, beam spreading and collimation. 这一优点的实现主要依靠束流配送系统,它包含质子能量调节与调制、束流扩展和准直等功能。
- The effect of obscuring ratio on the beam spreading was analyzed.The results show that the obscuring ratio has obvious influence on the beam spreading in weak turbulence. 结果表明，对于均强聚焦光束湍流大气传输，在弱湍流效应条件下，光斑扩展受遮拦比影响较大；
- Incandescent reflector test lamps shall be of the widest beam spread available. A Type MR test lamp shall have a dichroic reflector. 带反光杯的白炽灯测试用灯泡应当有最宽的扩展光束，MR型测试灯应当有分色反射灯。
- Simulation results show that aberration originates mainly from beam spread, and diffractive aberration is larger than spherical aberration and chromatic aberration. 模拟结果表明原子束的发散角是产生像差的主要因素，衍射像差大于球差和色差。
- You'll be tempted to clean the wind, lifted the pink ray of soft, floral bouquet of beam spread of the fishes One, Get Fit , tender heart, along the lake Subtle soft, lightly-mile heart of a beauty . 清新的风儿按捺不住，撩起一丝柔媚的粉红，一束束花香蔓延出一丝丝的氤氲，窈窕清逸，妩媚了心湖里一道柔软的婉约，翩跹了心海里一次袅娜的美丽。
- beam spread collimation optical system 扩束准直光学系统
- What can we do to prevent the disease spreading? 我们能做什么来防止这种疾病蔓延呢？
- She performed on the balance beam with much grace. 她在平衡木上表演得非常优美。
- The smoke from chimney is spreading out in the sky. 烟囱冒出的烟正在空中散开。
- The beam of the searchlight pierced the darkness. 探照灯的光柱射入黑暗中。
- Moral taint has spread among young people. 道德的败坏在年轻人之间蔓延。
- His answer was right on the beam. 他的答案完全正确。
- He spread the map flat out on the floor. 他把地图平铺在地上。
- It is John that/who is spreading the news. 传出消息的人乃是约翰。
- A hopeless future seemed to spread out before her. 展现在她面前的似乎是毫无希望的前途。
- He has spread a slice of bread with Jam. 他把面包片抹上了果酱。
- He struck the beam with his head. 他的头撞到梁上了。
- He spread the news around the town. 他在镇上到处传播这一消息。
- The beam has a thickness of 3 inches. 这根梁厚3英寸。
