density
名詞密度; 稠密，濃厚; [物]濃度，比重; 愚鈍
名詞
1. The driver had to stop because the density of the fog made it difficult to see.
由于濃霧使道路很難看清，司機(jī)不得不停車。
2. The area had a population density of five people per square mile.
該地區(qū)人口密度為每平方英里五人。
3. 密度 密度：多度(abundance)是一個(gè)數(shù)量上的比率4、密度:密度(density)是指單位面積上某個(gè)物種的個(gè)體數(shù). 8、生產(chǎn)量:生產(chǎn)量(production )是指一定空間的有機(jī)體在單位時(shí)間內(nèi)生產(chǎn)的有機(jī)物質(zhì)的重量9、頻度:頻度(frequency)是指群落中某物種出現(xiàn)的樣方數(shù)占全部調(diào)查樣方數(shù)的百分率.
1. 密度;稠密;密集
Density is the extent to which something is filled or covered with people or things.
e.g. ...a law which restricts the density of housing...
限制房屋密集程度的法規(guī)
e.g. The region has a very high population density.
該地區(qū)的人口密度很高。
2. （物質(zhì)或物體的）密度
In science, the density of a substance or object is the relation of its mass or weight to its volume.
density的反義詞
e.g. Jupiter's moon Io, whose density is 3.5 grams per cubic centimetre, is all rock.
密度為每立方厘米 3.5 克的木星衛(wèi)星木衛(wèi)一上遍布巖石。