An axial vector may itself enter into a vector product.轴矢量自身可参与矢积.Those that are aligned perpendicular to the plane are called axial hydrogens.与平面垂直定向的氢叫做直立氢.Objective To analyze the treatment effect of brain diffusive a...
克罗斯比断言说：“我们一无所获，在做无用功。”"Getting nowhere fast," pronounced Crosby, "that's what we're doing."他正在桌前用功。He was working at his desk.她上学非常用功。She shows great diligence in her schoolwork....