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number of species

  • 物种数量:指某一生态系统或地理区域内所有不同物种的数量。

网络释义

  物种数

...体:一般:几种物质,P为几,同种固体不同晶形, 每种晶形自成一相,固溶体:P为1 2011-11-13 5 (二)物种数(number of species)与组分数(numer of components) 定义 ——物种数S 系统所含化学物质种类数。不同相含同一物质,视 为同一物种。

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短语

effective number of species 有效种数

双语例句原声例句权威例句

  • I am sure you're all aware of the worrying situation with a large number of species facing extinction.

    相信你们意识到了大量物种面临灭绝这个令人担忧情况

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  • A number of species have already disappeared, such as the jaguarondi.

    许多物种已经消失例如

    youdao

  • Onaverage, the number of species in the 44 sites increased by 23%.

    平均而言,44禁捕区内物种数增长了23%。

    youdao

更多双语例句
  • The number of species in an area is written near its name.

    VOA: special.2010.04.06

  • They are fantastic." Monica Jimenez and her daughters came from Colombia, a country that has a large number of orchid species.

    VOA: standard.2010.02.21

更多权威例句
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