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公开(公告)号：AU502764B2
公开(公告)日：1979-08-09
申请号：AU7796375
申请日：1975-02-06
Applicant: PYE LTD
Inventor： WIDMER D S
Abstract: In a spectrophotometry system, apparatus for modulating radiation in fixed phase relationship with an oscillatory electric signal, comprising a radiation interrupting member connected to an armature torsionally mounted in a magnetic field generated from said oscillatory signal.
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