Set your camera to its lowest aperture value (completely open).
将你的相机光圈开到最慢（完全打开）。
Set the lens aperture to the aperture value designated by the flash unit according to the ISO setting your camera.
按照您相机上闪光装置ISO设置，设置好镜头的光圈大小。
In the same aperture value, I have found that the sky needs four seconds shutter time, but 40 seconds for the sea level.
在一样的光圈值，我测得天空需要4秒的快门时间，但海面需要40秒。
Put the material in a known test hole on the aperture, and then through a small aperture will load imposed on the fabric, for reads deflection scale pointer value.
将待测材料夹在已知孔径的测试孔上，然后通过较小孔径将一定负荷施加于织物上，于刻度指针上读取挠曲度值。
Put the material in a known test hole on the aperture, and then through a small aperture will load imposed on the fabric, for reads deflection scale pointer value.
将待测材料夹在已知孔径的测试孔上，然后通过较小孔径将一定负荷施加于织物上，于刻度指针上读取挠曲度值。
应用推荐