Density
01
密度, 体積密度
(physics) the degree to which a substance is compacted, measured by dividing its mass by its volume
例
The density of water is approximately 1 gram per cubic centimeter ( g / cm³ ).
水の密度は約1グラム毎立方センチメートル（g/cm³）です。
Air has a much lower density compared to water, which is why objects float in water but fall through air.
空気は水と比べて密度がはるかに低いため、物体は水に浮かぶが、空気中では落下する。
02
密度, 集中度
the spatial property of having elements packed closely together, typically expressed as the number of units per given area or volume
例
Urban planners analyze population density to determine where to build new transit lines.
都市計画者は、新しい交通路線をどこに建設するかを決定するために人口密度を分析します。
The forest survey measured tree density at 550 specimens per hectare.
森林調査では、樹木の密度を1ヘクタールあたり550標本で測定しました。
03
the degree to which light is blocked or absorbed by a photographic filter or film, usually measured in stops or optical density units
例
The photographer adjusted the filter density to reduce glare.
The technician calibrated the density of the photographic plate.
