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...
His maneuvers in the market had his competitors buffaloed.他在市场上所耍的花招把他的竞争对手都搞糊涂了.How many maneuvers can you pull off with your manual interface?用你的人工接口可以做出多少个机动动作出来?Allied troops begin maneuvers tomorrow to show how quic...