几次延误都是由新的高科技行李传送系统造成的。Several of the delays were caused by the new high-tech baggage system.科技发展意味着许多医学衍生职业的增长。Scientific development meant the growth of numerous professions ancillary to medicine.请附上汇款，支票收款人为泰晤士河谷科技公司。P...
目的探讨老年人心脏瓣膜钙化的病因.Objective To discuss the etiology of cardiac valve calcification in elderly.绒毛膜转移癌治愈后可以在病变部位看到钙化的痕迹.Calcification has been noted at the site of successfully treated metastatic choriocarcinoma.心脏学家已经意识到了C...