Double - wave length ultraviolet spectrophotometry for the determination of MPC and DPU is exact, fast and simple.采用双波长紫外分光光度法测定MPC和DPU的 含量具有准确 、 快速、简便等特点.The concept to realize virtual DPU on general Windows platform us...
A constitutional amendment precludes any president from serving more than two terms.一项宪法修正案使得任何总统的任职不得超过两届。Important questions of constitutional law were involved.其中涉及到有关宪法的一些重大问题。They continue their groping towards a co...