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- In both the butterfly and the pill bug, the bacterium skews the populations' sex ratios massively toward females. 在非洲细蝶与鼠妇族群中,沃巴赫菌都大幅扭曲了性别比例,使雌性占了绝对多数。
- These problems include the high sex ratio and the growing population aging. 例如出生人口性别比偏高、人口老龄化等。
- population sex ratio 人口性别比
- Hatchling sex ratio at this beach possibly depends on the date of egg laying. 雉龟的性别比则可能受到产卵的时间所决定。
- Skewed sex ratios raised the competition. 倾斜的性别比例引发了竞争。
- But she added: "We think the sex ratio at birth is probably peaking now. 但是她补充道:“我们认为新生儿男女比例问题已经达到了顶峰。
- This paper analyzes the Birth Sex Ratio Problem of the ethnic population on the basis of the data from the fifth census of China and compare with the data of the third census and the forth census. 摘要本文以“五普”数据为基础,对比“三普”、“四普”数据,对我国少数民族出生人口性别比问题进行研究。
- Using the data from the Fifth Population Census,thispaper analyzes quantitatively the sex ratio of the same age,rela-tive sex ratio and sex ratio of match from the population matchperspective. 本文利用五普数据,从人口数量匹配的角度,定量的分析和比较了同龄性别比,相对性别比和婚配性别比。
- They see the decline in the sex ratio during this period as one of the key contributors to modern feminism. 他们视这段期间的男女比例下滑现象,为促进现代女性主义的关键因素之一。
- And they find that households with sons save more in high male-to-female sex ratio regions. 他们还发现,在男女性别比失衡的地区,有儿子家庭的储蓄率会更高些。
- Figures in brackets refer to the corresponding sex ratios. 括弧內的數字指相應的性別比率。
- The sex ratio (male vs female) are 1.5, 1.5, 1.7 and 2.0 respectively, with a trend of ascend. 男女性比例依次为1.;5、1
- The sex ratio at birth not only shows in different childbearing orders but also in regional distribution. 出生性别比偏高不仅表现在分孩次的差异上,而且还表现出了明显的地区分布特征。
- Campoletis chlorideae Uchida,Helicoverpa armigera (Hubner),Spodoptera litura,mating,sex ratio,oviposit,semiochemicals. 01棉铃虫齿唇姬蜂;生物学;棉铃虫;斜纹夜蛾;交配;性比;产卵;引诱;产卵物质
- There have been populations where the sex ratio has altered, but never to this degree," Hesketh added. 在很多族群中,男女性别比例都存在异常,但是从来没有这么高的。”赫斯基补充道。
- The unbalance sex ratio at birth is ”a tragedy of the commons” from the angle of the publics. 从公众的角度看可以认为中国今天的出生性别比失衡是一场“公共地悲剧”。
- They said enforcing the ban against sex-selective abortions could normalize the sex ratio in the future. 他们说,坚决禁止性别选择性流产能在未来使性别比例回复正常。
- This scarcity reverses normal gender roles, because females are in demand in populations with an equal sex ratio. 雄性成为稀有动物之后,传统的性别角色都颠覆了,因为在性别比例平衡的情况下,待价而沽的是雌性。
- We found no significant difference in the sex ratio between EWS and CS (P > 0.05). 实验增温灌丛样地与对照间性比的差异不显著(P>0.;05);
- UNICEF says India is one of the few countries worldwide with an aderse child sex ratio in faor of boys. UNICEF说印度是世界上少数几个性别比例有害,喜好男孩的国家之一。