primeval lead 中文意思是什麼

primeval lead 解釋
原始鉛
  • primeval : adj. 早期的,原始(時代)的,太古的。 a primeval forest 原始森林。adv. -ly
  • lead : n 1 鉛,鉛製品。2 【航海】測鉛,測深錘,水砣。3 〈pl 〉(鋪屋頂的)鉛皮;鉛皮屋頂;【印刷】插鉛,...
  1. The reason is that the quality and function of current forest can not match the natural primeval forest with perfect soil conservation effectiveness. because unitary surface material and less land surface roughness which can not retain runoff lead to short confluence time, quick delivery of flood, easy superposition of floods, and result to flood disaster

    原因是目前的森林質量和功能都無法與具有水土保持功能的原始森林相比,其地表組成物質太少且單一,地面粗糙度低,起不到對地表徑流的阻擋作用,致使地面徑流匯流時間縮短,洪水下泄快並容易形成洪水疊加,導致洪澇災害加劇。
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