The Pentagon will give preference to companies which do business electronically.美国国防部将会优先考虑那些能够进行电子商务的公司。Pentagon spokes-man Williams says those talks are coming along quite well.五角大楼发言人威廉斯说那些会谈进展得相当顺利。Pentagon spokesman...

The cyclopentadiene is prepared by the thermal cracking of dicyclopentadiene.以热裂解双环戊二烯的方法制备环戊二烯.The method of cyclopentadiene ( CPD ) from dicyclopentadiene ( DCPD ) with liquid phase thermal decomposition method is stud...

二茂锡...

富烯...

isopentanize的音标：isopentanize的英式发音音标为：[aɪsə'pentənaɪz]isopentanize的美式发音音标为：[aɪsə'pentənaɪz]...

dichloropentane的音标：dichloropentane的英式发音音标为：[daɪklɔ:rə'penteɪn]dichloropentane的美式发音音标为：[daɪklɔrə'penteɪn]...

aminopentane的音标：aminopentane的英式发音音标为：[æmɪnəʊpen'teɪn]aminopentane的美式发音音标为：[æmɪnoʊpen'teɪn]...

cyclopentadecane的音标：cyclopentadecane的英式发音音标为：[saɪkləʊpentædɪ'keɪn]cyclopentadecane的美式发音音标为：[saɪkloʊpentædɪ'keɪn]...

dicyclopentadienyltin的音标：dicyclopentadienyltin的英式发音音标为：[daɪsaɪkləʊpenteɪdɪənɪl'tɪ]dicyclopentadienyltin的美式发音音标为：[daɪsaɪkloʊpenteɪdɪrnɪl'tɪ]...