请下载后查看，本文暂不支持在线获取查看简介。
Please download to view, this article does not support online access to view profile.
土壤抗剪强度与土壤侵蚀关系非常密切,是表征土壤抗侵蚀性能,土体破坏、埂坎稳定性重要力学指标,同时也是土壤耕性的重要参数。本文以江西进贤、云南马龙、广西来宾红壤坡耕
The day my stylish neighbor, Karen, visited me at home. I felt completely out of place in my faded blue jeans a,,nd red plaid blouse,clothes that had become my
青冈栋(Cyclobalanopsipglauca)属于壳斗科、栋属,常绿乔木树种,其生态适应性相对较强,是优良的珍贵用材树种,同时也是我国亚热带地区东部湿润常绿阔叶林中的主要优势树种,青
维生素E是人体必需的脂溶性维生素，只能在光合自养生物中合成，核桃（Juglansregia L.）坚果是重要的天然维生素E源。本研究以早实核桃‘香玲’胚为材料，克隆了维生素E生物合成途径的
近年来，随着城市化进程的不断推进，人们把关注度逐步倾向中心镇在城市化进程中的地位和作用。全国各地的政府陆续制定了中心镇的发展战略，积极倡导中心镇的建设。把中心镇培育成
利用透射显微镜(TEM)观察亚洲玉米螟Ostrinia furnacalis(Guene)幼虫取食了表达Cry1Ab杀虫蛋白的转Bt基因玉米心叶组织后中肠的组织病理变化,以探讨转Bt基因玉米对亚洲玉米
Last month,I spent a few days in Beijing-quite a place now. English has definitely become an important part of the life of this cosmopolitan city.
Scooby,your orders ready. Scooby-Doo,where are you?Darren scampered away from the microphone,giggling. He looked around to see if Mr. Eakins was coming his way,
白蜡虫（EriceruspelaChavanness）对极端高温和低温具有非同寻常的耐受能力，这对白蜡虫种群分布和白蜡生产具有重要意义。为研究热激蛋白(heatshockprotein，Hsp)与白蜡虫适应极端