Methods :Three wavelength spectrophotometry was adopted.

方法：采用三波长分光光度法。

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PurposeDevelope the three wavelength laser machine control interfaces and optical interfaces for the treatment of ocular fundus.

目的在现有全固态激光模块的基础上，开发针对于眼底病的三波长激光治疗机控制接口和光学接口。

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This paper presents a new relationship of three-wavelength radiation pyrometer by a theory of multi-wavelength, and establishes a three wavelength mathematical model.

本文基于推导多波长辐射温度计的理论，推出了一种三波长辐射测温法的新关系式，并建立了三波长辐射温度计的数学模型。

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Many minerals in the asbestos family can absorb light with a wavelength measuring two-point three micrometers.

VOA: special.2009.11.17

Cones, which are responsible for colour vision, come in three varieties, each tuned to a particular wavelength.

ECONOMIST: The biology of art

Dr Lin is already testing a waveguide designed to steer light with a wavelength of 1.5 microns, and he is also working on three-dimensional waveguides made of silicon, which will provide almost total control over the path the light takes, and make really complex optical circuits possible.

ECONOMIST: New-age crystals