例句與造句

1. "Infrared grade " fused quartz ( tradenames " Infrasil ", " Vitreosil IR " and others ), which is electrically fused, has a greater presence of metallic impurities, limiting its UV transmittance wavelength to around 250 nm, but a much lower water content, leading to excellent infrared transmission up to 3.6 ?m wavelength.
2. It's difficult to find infrasil in a sentence. 用infrasil造句挺難的