The phase structure and surfaceappearance were analysed through SEM, EDS, XRD.应用扫描电镜(SEM) 、 能谱仪(EDS)和X射线 衍射(XRD)等手段分析研究了氧化铝膜的相结构和表面形貌.Explaining curriculum change : social studies in Hong Kong In Stimpson and Morris eds....
When automobiles become popular, the use of the horse and buggy passed away.汽车普及后, 就不再使用马和马车了.Automobiles speed in an endless stream along the boulevard.宽阔的林荫道上,汽车川流不息.The factory was built for the production of automobi...
The male menopause is said to affect men who are approaching middle age.据说步入中年的男人会经历男性更年期.Debate has raged around the possibility of male menopause for decades.关于男人更年期是否存在问题争论已持续数十年.Menopause is a natural biological proc...