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1·If the optical head is on track, then the primary beam will be centered on a track (with pits and bumps) and the two secondary beams will be centered on land.

如果光学头在轨道上，主激光束将处于轨道中心，两个副光束处于轨道之间。

2·The SIMS technique bombards the lunar samples with a primary ion beam that allows the researchers to separate the ions with a magnet, depending on the charge.

SIMS技术可以以离子束轰击月岩样本，从而使研究人员调整电荷水平，用磁石分离出离子。

3·Their primary weapon was a lightsaber pike with a red beam extending from the tip of the weapon.

他们的主要武器是一支光剑矛并于矛的顶端有一支延伸的红色光束。

4·The primary cause of breakage is that the dynamic stress exceeded the allowable fatigue limit of the beam, and another cause is that the structure of the beam is unreasonable.

通过计算证明引起断裂的根本原因是动应力超过了梁的许用疲劳极限，另一原因是梁的结构不合理。

5·The authors point out that the primary characteristics of coming generation LRF's are eye safety, higher efficiency and beam quality, newer laser materials, function modularization.

对人眼安全、提高效率、改进光束质量、采用新的激光材料及功能模块结构将是新一代军用激光测距机的主要考虑因素。

6·The primary of the analysis include the lateral force in the top deck of box girder and the lateral force of the diaphragm beam on the pier.

其分析主要包括：箱梁顶板的横向受力分析以及箱内横隔梁的横向受力分析。

7·Considering the restraining moment of the secondary beam, the paper deduces formulas for calculating torsional moment of edge beam of frame. Primary factors of affecting torsional moment are analyzed.

考虑次梁的约束作用，推导了框架边梁的扭矩计算公式，分析了影响扭矩大小的主要因素。

8·The fixing of davit and primary lifting beam is the key for assembling the hoisting tool of satellite.

吊块及主吊梁的安装是某型号卫星整星吊具安装中的关键环节。

9·The propagation characteristics of laser beam in underground air medium were studied, primary causes of the laser energy decaying in the underground were explored theoretically and practically.

研究激光光束在井下空气介质中的传播规律，从理论和实践上探索和分析井下激光能量衰减的主要原因。

10·In this paper, the orthogonal design method is used to find out the primary and secondary factors that affect the bearing capacity of beam-to-column connections in steel moment frames.

本文通过在钢框架梁柱腹板连接承载力影响因素分析中引入正交设计方法，找出了主要因素和次要因素。