1) major cations
主要阳离子
1.
Hydrologic process,turbidity,suspended particles matters(SPM),major cations and TOC concentrations during two storm events in late April 2008 were monitored at Jiangjia Spring which is the outlet of Qingmu Guan underground river system.
通过对2008年4月下旬降雨期间,重庆青木关地下河系统出口姜家泉泉水的水文过程、浊度、悬浮颗粒物、主要阳离子和TOC浓度的监测,结合悬浮颗粒物的扫描电镜和能谱分析图,来研究岩溶流域地下水中悬浮颗粒物浓度、浊度、主要阳离子和TOC等物质的运移特征。
2) major ions
主要离子
1.
Of the major ions(Cl-,NO3,SO2-4,Na+,K+,Ca2+,Mg2+,NH+4),the concentrations in winter are higher than t.
2005年10~11月在青藏高原唐古拉山脉各拉丹冬峰冰川区不同海拔采集了3个雪坑样品,分析结果表明,雪坑中δ18O和主要离子浓度具有明显的季节变化特征。
3) major ion
主要离子
1.
The examination of major ion geochemistry is based on the field sampling of the dissolved loads from the Changjiang River on eastern QinghaiXizang Plateau in the years of 2000 and 2002.
作者于2000年和2002年对青藏高原东部长江河流溶质载荷进行了较为系统的野外取样工作,并对主要离子地球化学特征进行了分析研究。
2.
The geochemistry of major ions (Ca~2+, Mg~2+, Na~+, K~+, HCO~-_3, SO~2_4, Cl~- and Si~4+) in the Yangtze River was studied, based on the continuously monitoring data at 191 stations in the drainage basin for the period of 1958—1990.
文章在对1958—1990年期间长江水系191个站点水质监测资料进行统计分析的基础上,研究了长江主要离子的地球化学。
4) major acid and alkaline ions
主要酸碱离子
1.
Relation of pH and major acid and alkaline ions in atmospheric wet deposition (precipitation) of Western Yellow Sea;
黄海西部大气湿沉降(降水)的pH与主要酸碱离子的关系
5) major ion chemistry
主要离子化学
1.
Based on the analyses of water quality monitoring data of over 120 hydrometric stations in the Yangtze River System during the last 30 years,the effect of lithology and climate (rainfall) on major ion chemistry of the river water has been studied by means of statistical approaches such as principal component analysis (PCA) and correlation analysis.
在分析长江流域１２０ 余水文站点近３０ 年水质监测数据的基础上，运用主成分分析、相关分析等数理统计方法研究岩性和气候条件（ 降水量） 对长江水系河水主要离子化学的影响。
6) major ion concentration
主要离子浓度
补充资料：主要
1.把握事物的关键。 2.指事物中关系最大，起决定作用的。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条