Why doesn't it fly apart under the coulomb repulsion of like - charge elements?为什么它不在同类电荷元的库仑排斥作用下散开 呢 ?Exciton is electron - hole pair held together by their mutual Coulomb interaction.激子就是由电子和空穴在相互间的库仑力作用下,相互维持在一起...
The purpose of the study is to characterise 101 cases of pulmonary acariasis patients.本文总结了101例肺螨病患者的临床表现、胸部X线 特征及用甲硝达唑治疗结果.Secondly, we characterise premium rate mobile message services and examine their emergence.其次, 我...
Mark VII Productions ( Jack Webb ): Dragnet, Adam 12, Emergency.马克七世制作公司 ( 杰克?韦布 ): 《警网》 、 《亚当12》 、 《紧急事件》.Adam sought guidance from the Almighty...亚当寻求上帝的指引。Adam spent a lot of time in his grandfather's office...亚当...
Sawdust was used as a hygienic floor covering.锯屑曾被用来铺在地上保持地面清洁卫生。Food must be prepared in hygienic conditions.食物必须在卫生的环境中制作。It's more hygienic to use disposable paper tissues.使用一次性餐巾纸更为卫生....