The transitions of bisphenol A and phenolphthalein oligo -- polysulfones were inves - tigated by DSC.本工作用示差扫描量热法(DSC)研究了双酚A型和酚 酞 型两种聚砜预聚物的转变.Forbidden transitions are those for which dipole radiative transitions are not ...
The spade and fork have longer shafts, providing better leverage.锹和耙的手柄较长,可发挥较好的杠杆作用。We'll have to use leverage to move this huge rock.我们不得不借助杠杆之力来移动这块巨石.He has some leverage over the politician.他对这位政界人士有些影响....