Test the fabric by the traditional fabric measurement method based on downward projection and got the experiment data.
采用传统的基于俯视投影的织物悬垂性测试方法对织物进行测试，得出实验数据。
New test data was mapped to the projection vector and its fault information was known.
将新增测试数据投影到该向量上，获取新数据故障类别信息。
Three types of projection displays are produced for each test image.
最后，对于每一幅测试图像可以得到三幅投影显示图像。
The projection optics is designed for a constant field angle and entrance pupil. Thus image always fills entrance aperture and view field of the test optical system.
从光学指标的确定，结构、材料的选取到最终光学性能，阐述了准直投射光学系统的设计。
The projection optics is designed for a constant field angle and entrance pupil. Thus image always fills entrance aperture and view field of the test optical system.
从光学指标的确定，结构、材料的选取到最终光学性能，阐述了准直投射光学系统的设计。
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