气体的压强是由这些粒子对容器壁的撞击造成的.The pressure is caused by the bombardment of the container walls by these particles.依照理论, 物质只能在粒子 - 反粒子对中产生.According to the theory, matter can only be created in particle - antiparticle pairs.湮灭能产生...
Objective To study the purification process of total flavonoids in Lignum Dalbergiae odoriferae with macroporous resin.目的考察大孔吸附树脂分离纯化降香总黄酮的工艺条件及参数.OBJECTIVE : To enrich and purify Achyranthes Bidentata Saponins with macr...
As he and Henrietta passed through the gate he kept a tight hold of her arm.他和亨丽埃塔通过大门时，他紧紧抓住她的胳膊。Henrietta looked disappointed, and her steady gaze betrayed it.亨利艾塔有些失望, 她那炯炯逼人的目光泄露了这一点.Henrietta was at this time more t...