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。
When the formulas are applied, the scale of the observation system due to the large focus aperture Angle must be enlarged, or else the empirical formula will be invalid.
在实际应用中，由于聚焦孔径角加大，观测系统范围也必须相应加大，否则经验公式失效。
This paper introduces the status in quo of measurement of large aperture laser energy, and designs an automatic measurement system of laser energy for large scale laser instrument.
分析了国内目前大型激光装置大口径激光能量测量的现状，研制了基于总线的多路激光能量自动测量系统。
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