【摘 要】
：
Wet deposition was collected in Mexico City (MC), Metropolitan Area of Monterrey (MAM) and El Chico National Park (ECNP), during 2009 and 2010. pH, conductivity
【机 构】
：
ChemistryDepartment,NationalCenterforTrainingandEnvironmentalResearch,ResearchCenteronEnvironmentalS
论文部分内容阅读
Wet deposition was collected in Mexico City (MC), Metropolitan Area of Monterrey (MAM) and El Chico National Park (ECNP), during 2009 and 2010. pH, conductivity, Cl-, , Na+, K+, Ca2+ and Mg2+ were determined. In MC, sulphate levels were greater than nitra
其他文献
“一……就……”在英语中有很多表达法,本文拟对各种表达法作一归纳,希望能对同学们的学习有所帮助。1.as soon as引导的时间状语从句既可置于主句之前,也可置于主句之后。
通过对西部部分地方高校的调研，发现其人力资源管理现状不客乐观，集中表现为人力资源管理整体性不足，层次性不强，人力资源相关部门之间分工不明、责权不清等。从系统论视角详细阐
Since 1991, air pollution has gained special attention in Taiwan after a petrochemical complex was constructed in Mailiao Township, Yunlin County. We explored t
9月18日，国务院总理温家宝签署第535号国务院令，公布《中华人民共和国劳动不堪实施条例》，《条例》自公布之日起施行。
2004年，黑龙江农垦总局采购了大批先进的约翰迪尔进口拖拉机。3年来。这批迪尔拖拉机以其稳定性和可靠性赢得了垦区用户的一致肯定，为用户创造经济效益的同时也为垦区的农业现
福田雷沃重工作为国内著名的机械装备制造商，近年来依靠“集成知识，整合创新”，努力创建节约型企业，在节能降耗、保护环境方面取得显著成果。前不久，国内首家采用处理后的中水作为
Medellin is a 3.5 M inhabitant city located in an Andean valley in northwestern Colombia. Its initial prosperity was due to agriculture and cattle-raising carri
Mitsuaki recently arrived in the United States to enter university. He wants to do well in his studies and adjust to the new culture. But Mitsuaki has a problem