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- Whenever this value, called the reproductive number or Ro, is more than 1, it means that a disease is transmissible, and the higher the number, the easier it's transmitted. 无论何时,只要被称为复制数量或R的数值超过1,就意味着该病具有传染性,这个数值越高,传染性越大。
- In this paper, dynamical behavior of a kind of SEIS model with the saturating contact rate is studied.A basic reproductive number which determines the outcome of infectious disease is discovered. 摘要研究了一类具有饱和接触率的SEIS模型的动力学性质,得到了决定疾病绝灭或持续的基本再生数。
- We define the basic reproductive number for the models.The basic reproductive number is the average of secondary infections produced by a typical infective during the entire period of infectiousness . 在研究中对这些模型引入了再生数,其意义为一个病人在染病期内平均感染的人数,再生数决定平衡解的稳定性及地方病平衡点的存在性。
- the invasion reproductive number 侵入再生数
- Ca. 1890. (Image courtesy of the Library of Congress, Prints and Photographs Division [reproduction number, LC-USZ62-128868 (b&w film copy neg. 大约1890年,他扮演一齣戏中的角色,正用鹅毛笔书写。
- Nathaniel Hawthorne, circa 1883. (Image courtesy of the Library of Congress, Prints and Photographs Division [reproduction number, LC-USZ62-2358 (b&w film copy neg. 霍桑,约1883年(图片出自美国国会图书馆出版与摄影部,(复制号码LC-USZ62-2358黑白底片复制))
- Rome. Palace of the Caesars. (Image courtesy of the Library of Congress, Prints and Photographs Division [reproduction number, LC-USZ62-104886 (b&w film copy neg. 罗马。凯撒的宫殿(图片由美国国会图书馆,印刷品与图片部提供。复制品编号:LC-USZ62-104886黑白照片。)
- Don Quixote and shepherds. (Image courtesy of the Library of Congress, Prints and Photographs Division [reproduction number, LC-USZ62-102351 (b&w film copy neg.)]. 唐吉诃德和几位牧羊人(本图由国会图书馆印刷与照片部门提供;翻拍序号LC-USZ62-102351)
- China. Passenger wheelbarrows. (Image courtesy of the Library of Congress, Prints and Photographs Division. [reproduction number, LC-USZ62-113721 (b&w film copy neg. 中国。乘坐独轮车的人。(感谢国会图书馆印刷品和照片部门提供)。[再制号码:LC-USZ62-113721(黑白负片复制)
- He thumbed through the directory to look for her number. 他翻阅电话号码簿找寻她的号码。
- Let me note down your address and telephone number. 让我记下你的地址和电话号码。
- He picked a winning number on the first draw. 他第一次便抽到一个中奖号码。
- The reproductive quality of audio tapes has improved enormously. 录音磁带的复制质量有了很大改进。
- The number of fish in coastal waters has decreased. 沿海鱼的数量已减少了。
- The number represented by the digit or digits in2. 在释文2。中所说的由一位或几位数字表示的数。
- The students in our class number thirty. 我班总共有三十名学生。
- I dialed the right number, but nobody answered. 我拨的号是对的,但没有人接电话。
- A number of new hats were on parade at the wedding. 在婚礼上见到有些人戴著新式的帽子。
- A number of satellites are now circling the earth. 一些人造卫星现在正环绕地球飞行。
- The number shall be cut in on a plate. 号码将雕刻在一块金属板上。