heavy rare earth metal 中文意思是什麼

heavy rare earth metal 解釋
重稀土金屬
  • heavy : adj （馬）患哮喘病的。adj 1 重的 （opp light） 有重量的；重型的；裝備重型武器的。2 大的；大量的，...
  • rare : adj 1 稀少的；（空氣等）稀薄的；（群島、星等）稀疏的。2 稀有的，珍奇的；極好的，珍貴的。3 〈口語...
  • earth : n 1 〈常E 〉 地球。2 大地，陸地，地面，地上。3 土壤，土。4 【化學】土類；泥。5 世界人類；人的軀體...
  • metal : n 1 金屬；金屬製品；金屬合金。2 【化學】金屬元素；（opp alloy）；金屬性。3 【徽章】金色；銀色。4 ...
  1. From the aspects of agricultural economic and environmental ecological effects, were the effects and mechanism of rare - earth micro - fertilizer to improve the growth, development, quality and yield of the crops ; the adjustment of crops growth by influencing the number of microbial population in soil district and the function of the soil dehydrase, alkaline phosphatase, urease and sucrase ; the ecophysiological effects of alleviating the injure of acid rain, ultraviolet radiation, heavy metal on crops were illustrated ; the sureness of bee ' s use in agricultural was provided, according to the rule of the distribution and enrichment of be in crops

    摘要從農業經濟效應和環境生態效應二方面，論述了稀土肥料促進作物生長、發育，提高作物產量，改善作物品質的效應與機理；影響土壤區系中微生物種群數量和土壤脫氫酶、堿性磷酸酶、脲酶及蔗糖酶的功能，繼而反饋調節作物生長；緩解酸雨、紫外輻射和重金屬傷害作物的生態生理學效應；並以稀土在作物體內分佈與富集規律為參考，探討了稀土農用的安全性。
  2. La3 + has greater ability of relieving the toxic effect of ni3 + to hydrocharis dubia b l. backer than that of ce3 +. however, the relif ability of rare earth to the stress of heavy metal was limited

    在狐尾藻葉片細胞超微結構水平上也能見到cr ~ （ 6 + ）的毒害作用在稀土元素la ~ （ 3 + ）的作用下得到緩解。
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