端末效应
参考答案:
聚合物流体经贮槽或大管进入小管时,在入口端需先经一段长为Le的不稳定流动的过渡区域,才进入稳流区Ls,称此现象称为入口效应也成为端末效应。
简述中央银行的基本特征。
At the seventh International Ballet Competitions , Fernando Bujones won the first gold medal ever _____to an American male dancer .
A.awarded
B.to be award
C.being awarded
D.should be awarding