...a tank of gas.一桶汽油In the reaction of chlorination, carbon tetrachloride was used agent, and chlorine gas as chlorinating agent.在氯化反应中, 以四氯化碳为溶剂, 氯气为氯化剂.This paper investigated the process of avalanche growth in electr...
目的: 探讨单纯鼓室成形术后发生胆脂瘤的原因并提出预防措施.Objective : To investigate the reasons of the second cholesteatoma of postoperative tympanoplasty.目的探讨外耳道胆脂瘤的病因和治疗方法.Objective To study the cause and treatment of external acoustic meatus ch...
他踮着脚尖走到门口，只穿着袜子没穿鞋。He tip-toed to the door in his stockinged feet.抬起一只脚，弯曲脚趾，使脚尖朝下。Raise one foot, curl the toes and point the foot down-wards.他们几乎脚尖踩着脚跟地挤作一团。They were bunching up, almost treading upon each other's...