A single pair of beams does not, however, produce a useful image. To do that requires scanning the object beam through the target about a hundred different ways.
不过仅利用一对光束并不能得到有用的图像，还需要从大约100个不同的角度让物体光束扫描目标。
Activate delay: the time in seconds to delay the pointer beam being able to be active again. Useful for preventing constant teleportation.
(激活间隔)：能够再次激活指针光束的延迟时间秒数。用来防止持续传送。
Could have been a useful beam.
原本是有用的栋梁。
Conclusion: the ultrasound is a useful tool for the diagnosis of superficial tumors and the evaluation of efficacy of the heavy particle beam therapy.
结论：超声检查对诊断浅表肿瘤及评价重离子治疗的效果具有重要的参考价值。
Quantitative relation between the transverse displacement of beam centroid and the misalignment of magnets is useful in the installation of magnets and the adjustment of steering coils.
磁体失准度与束流质心偏移的定量关系的计算研究对磁体安装定位及校正线圈使用是有意义的。
The beam propagation M2 factor is a useful parameter for characterizing laser beam.
光束传输M2因子是表征激光束的有用参量。
Show Pointer cursor: a cursor is displayed on the ground at the location the beam ends at, it is useful to see what height the beam end location is, however it can be turned off by toggling this.
(显示指针光标)：在光束终点位置的地面显示光标。用来看光束终点位置的高度很有用，它可以通过切换这个来关闭。
The obtained polarization gratings are very useful for highly functionalized optical devices because they can control both the beam propagation direction and polarization state.
记录得到的偏振光栅可以控制光束的传播方向和偏振态，在功能性光学器件中有很大应用价值。
Numerical examples show that FHT is a useful fast algorithm to simulate the beam propagation through a large high power laser amplifier system with cylindrical symmetry.
数值计算例表明，用快速汉克尔变换来模拟柱对称大型高功率激光放大系统中的光传输时，是一种非常有用的、快速的算法。
The experimental results showed that good beam quality was obtained with a hybrid unstable resonator in which useful output energy was obtained by transmission through a partially transparent mirror.
实验结果表明对于高增益的准分子激光，采用部份透射镜作耦合输出的混合型非稳腔可以使准分子激光的发散角减小到毫弧度量级。
The use of laser cooling atomic beam technique can greatly reduce this aberration and makes the magnetic lens a useful tool in the field of atomic optics.
应用激光冷却技术能使这一影响减小，从而使磁透镜在原子光学领域得到更广泛的应用。
We also derive out some useful expressions, such as electron bunching, beam-wave interaction power and gain, and carry out some discussions.
文中求得了相应的电子群聚、注一波互作用功率及增益的表达式，并进行了讨论。
The obtained polarization gratings are very useful in fabricating highly functionalized optical devices because they can control both the beam propagation direction and polarization state.
记录得到的偏振光栅可以控制光束的传播方向和偏振态，在功能性光学器件中有很大应用价值。
As a "machine tool", the laser beam has been found useful in cutting, drilling, and welding metals.
激光束作为一种“工作母机”，在切割、钻空和焊接金属方面已发现是非常有用的。
The results can give useful information for the designing and optimizing of the combustion beam structure.
计算结果可以对燃烧臂及其底座的设计与优化提供重要的参考依据。
Researchers realised that a tunable laser beam might be useful in surgery.
研究人员意识到，可调谐激光束也许可以用在外科手术中。
The results given in this paper is useful for analysing the transformation of ray or beam through a complex optical system and the problems of multielement resonators.
文中所得结果能用于分析光线或光束通过复杂光学系统的变换和多元件光腔的问题。
Laser ablation-molecular beam (LA-MB) is a useful method to study metal ion reacting with molecular clusters.
激光烧蚀-分子束(LA - mb)法是研究金属离子与分子团簇反应的有效方法。
Laser ablation-molecular beam (LA-MB) is a useful method to study metal ion reacting with molecular clusters.
激光烧蚀-分子束(LA - mb)法是研究金属离子与分子团簇反应的有效方法。
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