【Abstract】In the nineteenth century, unprecedentedly Britain had finished the Industrial Revolution and achieved a rap......

This paper focuses on the economic development and urban morphology as well as its impact on the transportation system d......

现在完成进行时由have/has been加现在分词构成(第三人称单数用has，其他用have)，主要表示现在以前这一段时间里一直在进行的一个动作......

AIM: To investigate the persistence of side population (SP) cells in pancreatic cancer and their role and mechanism in t......

Despite the importance of quantitative disease resistance during a plant’s life, little is known about the molecular ba......