densities的例句（densities在句子中的用法）

• Granulomatous disease by chest radiograph can appear as reticulonodular densities. 肉芽肿疾病胸片显示网点状致密阴影.
• Hypersonic wind tunnels operating at very low densities were developed starting in about 1960. 低密度超音速风洞大约开始发展于1960年.
• The relation amongst composition, densities, refractive index, Abbe number and transmission was studied. 测试玻璃的密度 、 折射率 、 阿贝数和紫外到红外波段的透过率等物化性质,研究密度和折射率与组成的关系及影响阿贝数 、 透过率大小的因素.