The differential diagnosis includes fibromatosis and chondroma of soft parts.鉴别诊断包括纤维瘤病和软组织的软骨瘤.In older patients, fibromatosis usually lacks calcification or chondroid differentiation.对于老年患者, 纤维瘤病通常缺少钙化或者软骨样分化.Objective...
The Intelsat IV communications satellite goes into commercial operation.国际卫星六号通信卫星投入商业使用.It's a member of the International Telecommunication Satellite Consortium ( INTELSAT ) , transmitting commercial traffic betwe...
The progresses in five - membered heterocyclic metallocene analogic complexes and their application in olefin polymerization are reviewed.综述了五元杂环类茂金属配合物的研究进展及其在烯烃聚合中的应用.One would expect strong and positive correlations b...