百花花楸(Sorbus pohuashanensis)属蔷薇科花楸属落叶小乔木,是一种潜力巨大的可药用树种.本研究从百花花楸成熟果实中制备了两类......

Bobby was named after his best friend， his grandfather， Bob.　　One of the best things Bob and Bobby did was to play with ......

What they don’t understand about birthdays and what they never tell you is that when you’re eleven, you’re also ten, ......

W inter nights in rural Maine are marked by a dense silence， reinforced by the snow-laden landscape.2 As someone who grew......

静电感应晶体管(SIT)是一种具有类真空三极管特性的新型半导体器件,具有功率大、增益高、跨导大和噪声低等优异性能。本文分析了SI......

随着近几年海洋资源的深入开发,水面无人艇因为其优秀的运动特性而被广泛研究应用。针对水面无人艇广阔的市场前景,国内外学者在其......

目的 研究基础泪液分泌试验Ⅰ、泪膜破裂时间检测的影响因素,探讨干眼的临床诊断策略.方法 对125例疑诊干眼患者在睑裂开放状态(睁......

BACKGROUND:Bangladesh is situated in the intermediate prevalence region of hepatitis B virus (HBV).The lifetime risk of ......

软件与 IT 服务业是美国的支柱产业之一，在协同工具、绿色信息、云计算、移动应用4个领域内高速增长，营造了一种“新知识经济”，并有......

Hiding at the end of a brandnew mountain road,Hongbai Town,deep in the mountainous regions of Sichuan Province,welcomes ......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

The main technical backgrounds and requirements are introduced with regard to earthquake ground motion design parameter......