The transparent adhesive must be homogeneous and low in absorption of light, and its refrangibility must be same as that of the material to be bonded.
作为光透性胶粘剂，必须均匀，对光具有低的吸收，和被粘接材料的折射率相当。
This article begins with introducing the conception of refrangibility, and then the relation between refractive index and density of the gas is established.
本文从介绍折射度的概念和性质出发，建立了气体密度与折射率之间的关系。
This article begins with introducing the conception of refrangibility, and then the relation between refractive index and density of the gas is established.
本文从介绍折射度的概念和性质出发，建立了气体密度与折射率之间的关系。
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