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 外源 [wài yuán添加此单词到默认生词本
exogenous
outside source
external source

  1. 外源氮的加人对蛋白质水平和酶的活性具有小的正面影响。
    Exogenous nitrogen had a slight positive effect on protein level and these enzyme activities.
  2. 辨识机制可能源自病原体带有特殊外源标记或是病原体缺乏与该生物相同的自我标记。
    Recognition mechanisms can be based on either the presence of distinctive foreign markers or by the absence of "self" markers.
  3. 采用盆栽试验方法,研究了外源有机物料及表面活性剂加入菲污染土壤后黑麦草对土壤中菲的修复作用。
    Pot experiments were performed to study the effect of amending organic matters and surfactants to phenanthrene-contaminated soil on phyto-remediation for soil phenanthrene with ryegrass.



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