On March 31, 2011, DEKRA inaugurated its regional headquarters in Shanghai, which, among other cutting-edge testing facilities, include state-of-the-art LED Technology Assessment Center.
2011年3月31日，DEKRA的亚太区总部在上海落成，内设最先进的LED技术评估中心及其它尖端科技测试场地。
Cutting-edge testing methods developed by Cambridge ESOL, the world's leader in English language assessment.
由世界一流英语测评专家的剑桥大学考试中心开发的先进测评方式；
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。
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。
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