Error budget estimation about conventional centering method shows that it cannot be used to control the vertex off-centering error, so interferometric method was suggested.
通过估算顶点偏心在传统定心仪上的测量误差，可以发现传统定心仪很难达到控制目的，而干涉测量方法却能得到较高的准确度。
Error budget estimation about conventional centering method shows that it cannot be used to control the vertex off-centering error, so interferometric method was suggested.
通过估算顶点偏心在传统定心仪上的测量误差，可以发现传统定心仪很难达到控制目的，而干涉测量方法却能得到较高的准确度。
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