VFR conditions是什么意思

用法例句

There was a model of celestial sphere when the ancients observed the sky with the naked eye.

古人裸眼目视观测天象时亦有天球模型,通过天球模型的建立,按1尺=1度的换算标准,可以确定“丈、尺、寸”天象记录的几何意义,并对“大如X”形式的记录进行尺度或亮度的量化,最后将两种记录统一在一个系统中。

Compared with the national standard method, the visual colorimetry with nitrite test paper has a series of features, such as low-cost, convenient-measuring, convenient-phore, and can be suitable for semi-quantitative analysis.

以中速定性滤纸作为试纸用纸的材料,目视比色卡是选用1。

It established a method of the determination of lead in water by concentration visual colorimetry, with simplified operation and good quality of selection.

利用铅的碘络阴离子可与孔雀石绿形成有色不溶性三元缔合物的性质，建立了水中铅的富集目视比色检测方法，操作简便，选择性好，适于在广大基层单位的水污染监测中推广应用。

Research on binocular stereo vision sensor;

双目视觉测量传感器研究

A binocular stereo vision with laser system was developed.

设计研制了结构激光双目视觉传感器,该传感器加入结构激光,很好地解决了立体视觉中对应点的匹配问题。

In the dissertation, we firstly elaborate the optical measurement principium based on binocular stereo vision system, then prove the feasibility of this method in theory.

而后利用C++语言程序实现了双目视觉测量系统的相对位置、姿态测量的算法仿真。