Resistance ability from endogenous protective enzyme systems in the plants was enhanced by heavy metal stress inducement in restricted range , while defence reaction crippled as the aggravation of the damage 植物内源保护系统的保护作用受到胁迫后在一定限度内能被诱导加强,防御反应随着重金属离子毒害程度的加重而减弱。
The proline in roots , stems and leaves is also important osmolyte . they will accumulate markedly with water stress aggravation . but inorganic ion acted less in osmotic adjustment process of cynanchum komarovii 牛心朴子在peg ( 6000 )处理时,可溶性糖大量积累,可达到1000 - 2000倍,并在一定范围内随着渗透强度( peg浓度)的增大而增加。
This paper deeply analyses the main problems of the eco - environment in western china , such as the problems of congenital defect , depredating of environment , frequent natural calamity , aggravation of environmental pollution . etc 摘要本文深入分析了西部区域生态环境存在的主要问题,即先天不足、环境退化、自然灾害频繁以及环境污染加剧等。
As aggravation of the crisis of water resource and water environmental quality worsen constantly , water resource shortage has already developed into one of the resources environmental question that the world is paid close attention to extremely 随着水资源危机的加剧和水环境质量不断恶化,水资源短缺已经成为世界共同关心的资源环境问题。
With the development of electric power system arid the aggravation of pollution , contamination flashover in hv insulator is getting worse and worse , so there ' s great importance in the measuring of hv insulator ' s leakage current 摘要随著电力系统的发展和各类污染的加剧,高压绝缘子的污秽闪络事故日益严重,对其泄漏电流的检测具有实际工程意义。