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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In the mid-1970s this mini-mania was kicked off in part by a TV advertising campaign pushing a brand of bread and centering on a fictitious trucker named C.

FORBES: The Push-To-Talk Push

David Carey, president of Hearst Magazines, sat down with AllThingsD's Peter Kafka to kick off Day 2 of D:Dive Into Media here in Dana Point, California, with the interview centering on Carey's take on how digital magazines are working out in a world that seems less and less intrigued by physical books.

ENGADGET: Hearst president David Carey: Apple taught people 'how to buy digital content'