世代

The results showed that the developmental threshold of egg, larva and immature periods was 12.67, 13.86 and 13.53℃, respectively. It revealed parabola relationship between temperature and both generation survival and finite increase rates. According to the corresponding parabola functions, the optimal temperature for survival and population increase was 30.2 and 33.7℃, respectively, and the optimal temperature range for growth and development of C. maculates was between 30 and 34℃.

结果表明：四纹豆象卵期、豆内幼虫及蛹期、未成熟期发育点温度分别为12.67，13.86和13.53℃；温度与世代存活率及周限增长率均呈二次抛物线关系，根据相应抛物线方程可知，四纹豆象理论最适生存温度和最适种群增长温度分别为30.2℃和33.7℃，其生长发育繁殖的最适温区为30～34℃。

Under tropical summer weather conditions, the Medfly completes its life cycle in 21 to 30 days.

热带地区的夏天，地中海实蝇完成一个世代只需21～30天。

There was significant interaction between host specialization and the inducement duration for producing sexual morphs.

寄主型与诱导时间长短对棉蚜有性世代的产生存在交互作用。

The collective memory of perfect young forms changes subtly, and leads to the much-worshiped youth aesthetics of the 21st century. It not only influences art creations greatly, but more profoundly influences an entire generation's appreciation of beauty.

动漫时代这种对青春不老的形像的集体记忆，在潜移默化当中，形成了21世纪新世代所崇尚的青春美学，不仅在创作上形成巨大的影响，更深刻地影响了整个时代普罗大众的审美观念。

Almost a whole generation of children throughout the world is familiar with Sesame Street and the characters of The Muppet Show.

全世界大约有一整个世代的儿童，都对芝麻街和大青蛙布偶秀中的各个角色十分熟悉。

The aim of this study was to investigate the risk of cirrhosis associated with genotype, precore stop codon G1896A mutation and A1762T/G1764A double mutation in the basal core promoter of hepatitis B virus.

本研究乃以前瞻性世代研究法探讨B 型肝炎病毒B、C基因型、precore stop codon G1896A 突变和basal core promoter A1762T/G1764A 双突变对於发生肝硬化的影响。

The narrations of urban readers reveal a sociological distance,and it is also a distinction in terms of ethnology,sex,and generation.

沈从文将城市读者的&他者&构成叙事话语，所表现出来的始终是一种社会学意义的距离，同时也是一种民族学意义上的，或者性别和世代上的区分。

Several structural features were obtained by yaks as a result of their living in lower-oxygen on Qingzang Plateau from generation to generation.

牦牛肺脏的结构具有特异性，这是牦牛世代生活于高原低氧环境下所获得的适应性变化。

At the present time, both analog and digital techniques are available for the generation of arbitrary waveforms.

当前，模式和数字式 techniques为任意信号波形的世代是可利用的。

In the past month, the world has witnessed one of the largest financial and economic upheavals in a generation.

在过去这个月里，世界目睹了一个世代以来最重大的金融与经济动荡之一。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐