密生群系;密闭群系 closed formation 闭锁生物群;封闭族群 closed population 封闭维管束 closed vascular bundle; definite vascular bundle ..
基于20个网页-相关网页
closed population detail 封闭式人口
a closed population 闭锁群体
closed population breeding 闭锁群育种
closed population technolodge 人工冻结技术
closed population honey beebreeding 闭锁育种
closed d population 闭锁群体
closed inbreeding population 封闭近交群体
The total number of nurses, the number of nurses per 100 000 population and the opening of previously closed or new heath facilities were recorded.
记录了护士的总数、每100,000人口中的护士人数和之前关闭但又重新运营的医疗机构或新开医疗机构的数量。
Modelling studies suggest that school closure has its greatest benefits when schools are closed very early in an outbreak, ideally before 1% of the population falls ill.
模型研究提示,疫情发生较早时关闭学校带来的益处最大。理想的时机是在不足1%人口患病之前。
Youngstown, a steel town, was devastated when its mills closed: over 30 years it lost more than half its population and thousands of jobs.
钢铁城市杨斯敦在工厂关闭之后就荒芜了:在超过30年的时间里,它的人口数下降了一半以上,损失了数以千计的就业岗位。
应用推荐