Boron - substituted polyaromatic mesophase prepared by co - pyrolysis of a tar pitch with pyridine - borane complex under autogeneous pressure.以煤焦油沥青和吡啶硼烷为原料采用加压热缩聚工艺制备硼取代聚芳烃中间相沥青.A new syntan product prepared with tar p...
The roof was covered with tar.屋顶涂抹了一层沥青.The pipe is caked with tar.烟斗里渍了很多油子.They drove across the river to New Hampshire on a hot tar road.他们沿着一条滚烫的柏油路开过了河，来到新罕布什尔州。...
He acted in radio dramas.他在广播剧中扮演角色。Our school dramas tend towards comedy and farce.我们学校编排的戏剧倾向于喜剧和滑稽剧.Do you think police TV dramas are realistic?你认为描写警察的电视剧真实 吗 ?...