由镜架、眼镜片和不透明材料层组成。
The spectacles consist of a spectacles frame, spectacle lenses and opaque material layers.
柔软不能自主成形的透明、半透明及不透明材料。
None rigid unsupported transparent, translucent, and opaque material, whether plain, embossed, molded or otherwise surface treated.
报道了一种用激光光热散射技术测量不透明材料热扩散率的方法。
A method to measure thermal diffusivity of opaque materials by a laser photothermal scattering technique is introduced in this paper.
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