Zooming is not possible while in macro mode.在微距模式下不可能实现变焦。He trained his camera on nature, sometimes zooming in to examine single leaves.他把自己的照相机对准了大自然，时而拉近镜头仔细观察一片片的叶子。Zooming and panning are navigational tools for expl...
氯苯 、 溴苯和苯硫酚化合物的谱带出现于低限附近.In compounds such as chorobenzene, bromobenzene and thiophenol it lies close to the lower limit.方法以3-甲氧基苯硫酚和对甲氧基 - 苯乙酮为原料经溴化、烃基化、环合重排排制得目标产物.Methods: The target compound was synthesized through b...