Numerous and extensive eddy cavities retard the turbulent mixing process.多而大的涡流区延迟了扰动的混合过程.Writing may retard the process of language change under certain conditions.在某些情况下,文字可能延缓语言的变化.All agencies that provoke change an...
A fan folds.扇子可以折叠起来。Two features of folds in stratified rocks that contain strut members invite special attention.包含在承压岩层内的成层岩石中的褶皱,有两个特点引人特别注意.The surface shows deep rill - like folds.表面有深沟槽 状 起伏褶皱.When not in use it f...