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- If two beams are to interfere to produce a stable pattern, they must have very nearly the same frequency. 如果要使两束光发生干涉以产生一幅稳定的图样，它的频率必须非常接近相等。
- The repulsion observed was great enough to cause the two beams to diverge rather than to cross inside the sodium cell. 已观察到的排斥大到足以使两束光叉开，不从钠室内穿过。
- Two beams of light continue to shine up from New York City until dawn this morning. 纽约市的两道光柱将持续照射至今日凌晨。
- If an attacking aircraft was exactly in the centre between the two beams, the pilot's course would be continuously illuminated. 如果一架进攻的飞机恰好位于两道光束的中间,驾驶员的航迹便不断地被光束照明。
- One is the development of coherent beam splitters, which divide a beam of atoms into two beams. 其中一个是发展同调的分束器，它可以将一束原子分为两束。
- Eventually the two beams will be fired in opposite directions with the aim of smashing together protons to see how they are made. 最终双光束将发射猛烈地在相反的方向目标，粉碎质子，看看它是如何取得的。
- In the wide weaving machine, the difference of warp tension on two beams are reduced by using a differential gear train of let-off motion double beams (side by side). 在阔幅织机上,以周转轮系差速器作双轴送经的方法可以通过机构自动调节来缩小两织轴的经纱张力差异。
- Earlier nuclear accelerators fired beams of heavy nuclei at stationary metal targets.RHIC, in contrast, is a particle collider that crashes together two beams of heavy nuclei. 早期的原子核加速器，是用重原子核束轰击静止的金属靶，但RHIC并不一样，它是让两束重原子核互撞的粒子对撞机。
- He observed that when light from a single source is separated into two beams, and the two beams are recombined, the combined beams produce a pattern of light and dark fringes. 他发现，把一束同源的光分成两束，再把这两束光重新组合在一起，组合的这两束光将产生具有明暗条纹的图样。
- This“ signal beam” then meets a separate reference beam, and where the two beams intersect they create an interference pattern in a light-sensitive medium. 然后，信号光会和另一独立的参考光相遇，当两个光束相交时，它们会在感光介质中制造一个干涉图样。
- This "signal beam" then meets a separate reference beam, and where the two beams intersect they create an interference pattern in a light-sensitive medium. 然后，信号光会和另一独立的参考光相遇，当两个光束相交时，它们会在感光介质中制造一个干涉图样。
- The laser beam is separated by a semi-wedgy lens into two beams with fixed angle, so the actual distance can be directly read out at the receiving pole. 激光束通过半楔形透镜,分为具有一定夹角的两束光,在接收杆上直接读取实际距离值。
- Michelson had only two beams, but he had no way to stabilize them, so Michelson had to wait for that rare moment when the two beams arrived at precisely the same time and place by chance. 米切尔森只用了两束光线，但是他无法使之稳定，所以米切尔森不得不等待这两束光线偶然分毫不差地同时到达同一地点的稀有时刻。
- With the successfully chemical hybridization,the photocurrent enhanced sharply. (3)A PR film sample of PVK-CdS/DO3/ECZ was prepared for two beam coupling experiment. （3）采用主-客体设计方法，制得新型的有机-无机纳米光折变复合体系PVK-CdS/DO3/ECZ，其中DO3和ECZ分别作为二阶非线性生色团和增塑剂，最后。
- The relation between parallelism of two beams from exit pupil and parallelism of two optical axises of binocular telescope is presented in the paper, so does their difference of measurement method. 简要地阐述平行光束通过双筒望远镜后，自出瞳射出的左、右两光束平行度与双筒望远镜左、右两光学系统光轴平行度之间的关系及其测量方法的差异。
- The two systems of government are polar opposites. 这两种政体正好相反。
- The femtosecond time resolved fluorescence depletion method has been introduced.In this method two beams of femtosecond laser was used.One excited the sample molecular to emit fluorescence. 本文介绍用飞秒时间分辨荧光凹陷探测技术，获得激发态分子时间分辨荧光光谱的方法。
- The business is owned by two partners. 这家商行为两名合伙人所拥有。
- She has two cars and in addition a motorboat. 她有两辆轿车外加一艘汽艇。
- The meat marinated in the brine for two days. 这块肉在盐水里泡了两天。
