The of double reference of metaphorical language in science requires a proper interpretation from existing reference theories.

科学隐喻语言的双重指称现象，需要现有的指称理论对其做出合理的阐释。

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The system USES a sophisticated parametric double reference measurement technique, that yields precise, highly reproducible results, even with difficult samples.

该系统采用更复杂的参数测量技术，能更精确，高重复性。

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With a theoretical analysis of double vision Angle and double channel reconstruction and experimental result, double reference light rainbow hologram are obtained and recorded.

完成双参考光彩虹全息图的制作，并给出其记录及双视角、双通道再现的理论分析及实验结果。

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And the extradition treaty's reference to double jeopardy may not be binding in some cases, he said.

CNN: Experts disagree over extradition for Amanda Knox

As he says this, the camera pans upwards to show an aircraft carving a line across the clear blue sky, a reference to both the double standards of Larson's patriotism and the secret that drives him on.

ECONOMIST: Sundance film festival