密度: 1.(密集的程度) density; thickness 短语和例子火力密度 density of fire; 兵力密度 density of troops; 那个国家的人口密度为每平方英里685人。 the population density of that country is 685 per square mile.2.[物理学] (物体的质量和其体积的比值) de
Example Sentences:
1.
Specification for optical densitometric measurements of printed maps 地图印刷光学密度量测规范
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Density optical demsity 密度光学密度
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Micrographics - test target of optical density measurement for microfilming negative 缩微摄影技术缩微摄影时检验负像光学密度用测试标板