查询词典 sex ratio

We also reviewed the recent progress in avian sex ratio by this method.

介绍了利用该方法对鸟类性比研究的进展。

The allelic diversity in terms of number of alleles per locus and expected heterozygosities in cultured populations N=8.0-9.4, H(subscript e=0.754-0.787 was considerably lower than that found in the wild populations N=11.3-15.0, H(subscript e=0.821-0.866. Allele distributions at all seven microsatellites indicated that the cultured populations lost some rare alleles belonging to wild populations. The small number and the biased sex ratio of abalone for hatchery broodstock might be responsible for the remarkable reduction of genetic variation in the studied populations.

结果表明，从等位基因数与杂合度上分析，养殖群体(N=8.0~9.4， H=0.754~0.787)遗传多样性显著低于野生群体N=11.3~15.0， H(下标 e=0.821~0.866；等位基因频率分布揭示出野生群体中一些稀有等位基因在养殖群体中有所丢失；亲鲍选用数量少与性别比例不均衡可能是产生养殖群体中遗传多样性显著减少的原因。

Critics say the policy has led to forced a bort ions and a dangerously imbalanced sex ratio due to a traditional preference for male heirs, which has prompted countless families to a bort female fetuses in hopes of getting boys.

批评人士认为，计划生育政策使很多具有"重男轻女"传统思想的家庭进行了选择性人工堕胎，由此造成了我国男女比例的严重失调。

China's unbalanced sex ratio may cause serious consequences as millions of men will be unlikely to find their spouses around 2020, said a Chinese demographer.

中国不平衡的性别比率也许会导致一系列问题，到2020年左右，将可能会有数百万的男性找不到他们的配偶，一位中国人口统计学家说。

BEIJING, Aug. 15 -- China's unbalanced sex ratio may cause seriousconsequences as millions of men will be unlikely to find their spouses around 2020,said a Chinese demographer.

新华社北京消息：一位人口统计学家说，中国当前男女比例失衡，将导致在2020年前后有数百万男人找不到媳妇的严重后果。

This paper also analyzed the relationship between the sex ratio and the laying order in the broods of Little Egret and Chinese Egret.

本文还探讨白鹭和黄嘴白鹭的产卵顺序与雏鸟性别之间的关系。

Except a lower incidence of strawberry tongue and indurative edema of palms and soles in patients younger than 6 months,(p.05) there was no significant difference in sex ratio, season distribution, duration of fever, respiratory tract symptoms, lips and oral cavity changes, peripheral extremities changes, conjunctivitis, cervical lymphadenophy and skin exanthema between both groups.

小於6个月的病例除了其草莓舌及手足部硬性浮肿有较低的发生率之外（p值小0.05），其他临床表徵包括男女比例、季节分布、发烧日数、呼吸道症状、口咽喉变化、四肢变化、结膜炎、颈部淋巴腺肿大及皮肤红疹均没有明显的差异（p值大於0.05）。

Development period of the parasitoid pupa from the 5th instar larva fed on MSB was significantly longer. Length of cocoon of MSB treatment was significantly shorter than the control. However, no obvious differences were detected in the development periods of egg to larva, cocoon mass size, wasp emergence rate, sex ratio, longevity and forewing length of wasp between KMD1 and the control. 3. Amino acid content in the haemolymph of SSB after fed with transgenic rice Although there were no changes on the components of amino acids in the haemolymph of SSB after fed with two transgenic rice lines, there were some changes on relative contents of amino acids.

取食KMD1 36h后0天，20种氨基酸中除天门冬酰胺、丝氨酸、苏氨酸和甲硫氨酸外，其它16种氨基酸的含量都高于对照，其中组氨酸、甘氨酸、苯丙氨酸、异亮氨酸、赖氨酸差异达显著水平，谷氨酰胺、脯氨酸差异达极显著水平，与氨基酸总量表现一致的变化趋势；取食KMD1后1天，除天门冬酰胺、谷氨酰胺和赖氨酸高于对照外，其它17种氨基酸均较对照低，但仅丝氨酸、苏氨酸和色氨酸与对照差异显著；取食KMD1后3天，绝大多数氨基酸含量的变化与取食KMD1后0天的趋势一致，除丙氨酸和色氨酸比对照稍低，其它18种氨基酸均高于对照，其中精氨酸、缬氨酸差异显著，丝氨酸差异达极显著。

Ostrich skin;Ostrich peltry, salt system skin;Finished product ostrich skin, color ostrich leather, black ostrich skin, ostrich shoes, ostrich skin Xue, the ostrich wallet, leather belt, purse, briefcase, female pack, hand bag, ostrich skin ratio crocodile skin soft, pull dint with enduring sex ratio leather Gao 3-500%, is one of the most valuable leathers in the world.

鸵鸟皮；鸵鸟生皮，盐制皮；成品鸵鸟皮，彩色鸵鸟皮革，黑色鸵鸟皮，鸵鸟皮鞋，鸵鸟皮靴，鸵鸟皮包，皮带，钱包，公文包，女包，手袋，鸵鸟皮比鳄鱼皮柔软，拉力和耐用性比牛皮高3-5倍，是世界上最名贵的皮革之一。

Thus a one-to-one sex ratio is the only stable ratio; it is an "evolutionarily stable strategy."

因此，一比一的性别比例是唯一一种稳定不变的比例；它是一种&生物进化上的稳定策略&。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。