以下为句子列表：
英文: By using a reflector and two pentaprisms, one beam of light is separated into two parallel beams, then respectively they are received by two optical systems of the large scale photoelectric theodolite with certain imaging D-value which correspondingly rep
中文: 方法是利用一块反射镜和两块五棱镜将一束准直光束分光成两束平行光束，大型经纬仪的两个光学系统分别接收这两束平行光，两束平行光所成像的脱靶量差值即为两光学系统的光轴平行度。
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英文: Combining the construction survey of expressway, this paper presents the leveling survey method which adopts Total Station Optical Electronic Tacheometric Theodolite instead of leveling instrument, and gives a comparison between the two kinds of devices f
中文: 摘要结合高速公路的施工测量，对在工程施工过程中可以用全站仪代替水准仪进行水准测量的方法进行介绍，并从速度、精度对使用两种仪器进行了比较，说明用全站仪进行四等水准测量的可靠性和高效性。
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英文: Parallelization tester is used to test the parallel degree of multi-optic-axes system of the large scale photoelectric theodolite with precision less than 0.5 arcsec.
中文: 摘要平行度测试仪是检测大型光电经纬仪多光轴系统平行度的设备，要求平行度测试仪的精度要达到0.5。
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