The behavior of convective motion is not laminar but turbulent.对流运动的行为不是片流式而是湍流式.The flow is primarily laminar.这种流动主要是层流.The air flow was regarded as quasi - laminar.空气流动被视为准层流....
Lutein is dihydroxy - carotenoids with the ionone ring systems distributed widely in nature.叶黄素是含紫罗酮环的二 羟基 类胡萝卜素,在自然界广泛存在.Active ingredients: Plant extract, Amino acid, milk powder , carotinoid, lutein etc.主要成分: 植物提取物 、 ...
His speech was punctuated by catcalls.演讲不时给噓声打断。The audience punctuated his speech by outbursts of applause.听众不时以阵阵掌声打断他的讲话.Her speech was punctuated by bursts of applause.她的讲演不时被阵阵掌声打断。a silence punctuated only by the o...