In this paper, a discrete stage - structured epidemical model is proposed and studied.本文主要讨论了离散的阶段结构传染病模型.OBJECTIVE To explore the administration measures of air condition usage in SARS epidemical period.目的研究传染性非典型肺炎流行期间...
奇异果是纽西兰当地的水果.Kiwi is a fruit that is indigenous to New Zealand.香蕉, 草莓, 覆盆子, 黑莓, 薄荷, 奇异果, 你可以任意使用!Banana, strawberry, raspberry, blackberry, mint, kiwis, you name it!主要成份: 奇异果精华 、 芦荟胶 、 透明质酸 、 海藻、角鲨烷等.Main ingredients: ki...
本田先生自己年轻时就是位热衷赛车的车手。Mr Honda was himself a keen racing driver in his younger days.人们对休斯敦的会谈几乎过于热衷。There's almost a giddiness surrounding the talks in Houston.玛丽对下一次冒险异常热衷.Mary is unusually high on her next venture....
To displace or move a vein lode, or stratum, for example.(地层, 矿脉等)转位,滑动置换或移动(例如水脉、矿脉 、 地层等)Surgical waiting lists were reduced by the simple expedient of striking off all patients awaiting varicose vein operations...采取了将...
DDS -1 型多功能电子实验箱即可满足这方面的需要.DDS - 1 type m ulti - function electronic laboratory case can meet this requirement.子实 层生于菌褶的两面.These are covered in the spore - bearing layer ( hymenium ).图像分割的算法的程序, 用prewitt算子 实现的还有laplacian...