为了消除被测气体以外的其它随机因素的影响，在设计过程中采用了双光源、双光路、双气室结构。

In order to eliminate the effect of other factors on measurement precision, the double light sources, double light paths and double cells are used in this system.

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然后以特殊船型双隧道的“新黄测1 号水文测量船”为例，重点对如何应用FASTLINE系统对特殊船型的船舶线型进行光顺设计作了介绍。

Then with hydrologic survey ship "Xin Huang survey 1" the paper as an example emphatically explains how to apply FASTLINE system to design and fair the ship lines with special features.

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弹丸着靶坐标和飞行速度以及飞行方向角是外弹道测试中必测参数，本文针对四幕光幕靶和双光幕测速系统的不足，采用六个大靶面光幕靶，构造出了两类六光幕阵列结构。

Because of drawback of four-screen measuring system and two-screen velocity measuring method, an improved six-light-screen array is presented that is composed of six large area light screens.

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