America has a big problem, a population replacement process in progress.
美国有一个大问题，那就是正在发生的人口更替过程。
There are several reasons to be concerned about the below population replacement fertility levels in all of Europe and about half the world's population, including China and Japan.
在整个欧洲和几近半数的世界人口中，包括中国和日本，对于下降的人口更替生育水平有一些原因可以考虑。
In France the fertility rate is already around two children per female, not far short of the “replacement rate” which keeps population numbers steady.
法国的人口出生率已经达到每个家庭两个孩子，离保持人口数量稳定的“替代率”相差无几。
The fertility rate is the number of children a woman can expect during her lifetime; 2.1 is the replacement level, the point at which the population stabilises.
人口出生率是指女性一生预期生养的儿童数目；2.1是更替水平，人口在这一点上保持稳定。
the fertility rate of half the world is now 2.1 or less—the magic number that is consistent with a stable population and is usually called “the replacement rate of fertility”.
世界上一半的地区，生育率仅为2.1%，甚至更低。这一比率通常被称作“生育替代率”，标志着人口数量的稳定。
That number, the so-called replacement rate, is usually taken to be the level at which the population eventually stops growing.
1被称作是替换率，这通常被作为人口最终会停止增长的生育率水平。
Globalisation, it seems, leads to a shift in the direction of "replacement fertility" : the rate at which the size of a population eventually stabilises.
看起来，是全球化导致了“更替生育率”(replacementfertility)——使人口最终稳定下来的生育率——方向的转变。
The reason is that widening replacement-level fertility means population growth is slowing down anyway.
理由是生育等值交换水平的扩展表明人口增长不论怎样还是在减速。
Replacement rate — The level of total fertility that is compatible with a stationary population.
替换率——用来协调静止人口的总出生率级别。
Objective To compared the posterior slop between tibial plateau and meniscus in Chinese population for determining the angle of tibial osteotomy during total knee replacement(TKA).
目的：测量、比较分析中国人胫骨后倾角与半月板后倾角，为人工全膝关节置换术中胫骨侧截骨提供参考。
At present 1.5 babies are born for every European Union woman, when two births are required for the population "replacement rate" to be maintained.
目前欧盟国家的妇女平均生1.5个孩子，而为了保持人口替代率，每个妇女至少要生2个孩子。
Under simple random sampling scheme without replacement and unknown proportion of population possessing neutral attribute, the optimal allocation of sizes of two sub-samples is given.
对简单随机不放回抽样，在总体非敏感属性个体比例未知的情况下，给出了两个子样本容量的最优配置。
Under simple random sampling scheme without replacement and unknown proportion of population possessing neutral attribute, the optimal allocation of sizes of two sub-samples is given.
对简单随机不放回抽样，在总体非敏感属性个体比例未知的情况下，给出了两个子样本容量的最优配置。
应用推荐