查询词典 sex ratio

Laboratory experiments were carried out to study the survival and development of the Harmonia axyridis feeding on Chaito phorus popleti on high insect-resisitance hybrid poplar 741(Pb29) and medium insect-resisitance hybrid poplar 741(Pbl7).The API 741 poplar was used as control.The mortality and development during immature period,adult,baby mass.eclosion and sex ratio of H. axyridis were measured.The results showed that:to contrast The API 741, Chaito phorus popleti on Pbl7 and Pb29 has no significantly impacts on eclosion,pupation, ecdysis,mortality of immature period and pupa stage;Although every development stage of ladybeetles were not affected to ,the pupal duration of ladybeetles was lowered than the control;The body mass,eclosion and sex ratio have no significant difference.

通过利用节肢动物群落及各个亚群落的物种丰富度、个体数、均匀度和优势集中性对多样性指数进行通径分析，表明了高抗Pb29和CK节肢动物群落及各个亚群落多样性指数与均匀度和优势集中性的相关系数最高，与其物种个体数关系最为不密切：对各组分进行通径分析均表明的多样性提高是建立在降低优势集中性和增加均匀度指数的基础上的，而且以优势集中性的直接作用效果较为显著。

Shandong Province ; sex ratio ; sex ratio at birth ; interlocal diversity ; countermeasure

山东省；性别比；出生性别比；地区差异；对策

The article summarizes three concurrent characteristics of sex ratio in Shandong Province-i.e.the sex ratio is lower than the national average while experiencing up trend first after the New China was founded but doing down later,sex ratio is high in children's group,and a distinctive interlocal diversity of children's sex ratio in particular.

首先概括总结了目前山东省人口性别比三方面特点，即建国后性别比先升后降，低于全国平均水平；少儿组人口性别比偏高以及性别比尤其是少儿人口性别比的地区差异明显。

That sex ratio which maximizes the number of descendants that an indi vidual will have and hence the sex ratio which maximize the number of gene copies transmitted will be favered.

高级读法：直接读，见后：考查能力：大脑的排序能力第四类：省略：相对以上三种来讲比较简单，在短句中大家一般都可以看出。

Sexing technology is a very important research projects and directions in animal reproduction biology which can control the sex ratio by sperm or embryo sex determination.

性别控制技术已经成为繁殖生物学中重要的研究课题和研究方向，哺乳动物的性别控制是指通过对精子或胚胎的性别鉴定以达到调控子代性别的目的。

Determining the sex of the arowana is important in determining the sex ratio of the brooders to maximize breeding.

其產值則受限於如何的識別孵卵之性器官判斷龍魚的性別對於取得最大的繁殖率是非常重要的一件事情。

The sex ratio of the wintering population of Ruddy Shelducks at Lashihai Lake is severe male biased (male: female=1. 44: 1), the paired birds like to distributed in small group, and the degree of biased sex ratio were increased associated with the group size.

配对作为越冬期的一种策略，早期配对的赤麻鸭因具有较高的社会等级而得到了比非配对鸟更多的实惠，特别是当越冬的的食物资源十分有限的时候，配对鸟占有这些有限资源的机会更多。

The author comes to the conclusions that: the size of LSP is large, and its growth rate is high; the sex ratio of LSP is higher than the total population and working-age population, and comparatively speaking, its age structure is younger and cultural-educational quality is lower; the LFPR of total population goes steadily up; the characteristics of age-specific LFPR are similar to other countries; the LFPR of illiterate and semi-illiterate is lowest, and among the other population the higher the educational level, the lower the LFPR; the regional differences in the size, age-sex structure and cultural quality of LSP are obvious, and so is the LFPR.

首先对中国劳动力供给人口和劳动力参与率进行了研究，主要结论如下：劳动力供给人口的总量大、增长快；劳动力供给人口的性别比高于总人口和劳动年龄人口，其年龄构成比较年轻，文化素质也较低；总人口劳动力参与率稳步上升，1978—1994年，中国总人口劳动力参与率的回归模型为：Bt=40.1611(t-1977)〓(R〓=0.9150)；中国分年龄组劳动力参与率的特征与其他国家相类似，在15岁及以上人口中，文盲半文盲人口的劳动力参与率最低，其他文化程度人口则是文化层次越高，劳动力参与率越低。

The sex ratio of the ASIR for adenocarcinoma was lower than sex ratio of the ASIR for squamous cell crcinoma in 19 countries.

肺腺癌及肺鳞状细胞癌发生率男性皆高於女性。

Results: The sex ratio of the ASIR for adenocarcinoma was lower than sex ratio of the ASIR for squamous cell carcinoma in 19 countries.

结果：19个国家肺腺癌（adenocarcinoma， AC）年龄标准化发生率性别比值相对於肺鳞状细胞癌（squamous cell cancer， SCC）年龄标准化发生率性别比值是较低的。

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。