Besides, in most cases the overlong distance from knife edge to the aspheric surface to be tested will decrease the precision of the knife-edge testing.
此外，在很多情况下，刀口到待检非球面的距离很长，从而降低了刀口检验精度。
Comparing with the testing results of interferometer, the digital knife-edge testing technology is available and can provide theoretical basis for surface modification.
通过与干涉仪测量结果相比较，验证了数字刀口检测方法的可行性，为镜面误差的加工修正提供了依据。
Based on the geometry model which had been established, we make sure the choice of the experiment project and complete the experimental equipment design of the digital knife-edge testing.
根据建立的几何模型，确定了实验方案的选择，完成了实验装置设计，建立了数字刀口检测的实验装置。
Based on the geometry model which had been established, we make sure the choice of the experiment project and complete the experimental equipment design of the digital knife-edge testing.
根据建立的几何模型，确定了实验方案的选择，完成了实验装置设计，建立了数字刀口检测的实验装置。
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