查询词典 larva

Many species of caddis larva build a protective covering of fine gravel or debris to protect them in this stage.

幼虫，caddis和其他昆虫的水生阶段。很多的caddis larva会利用水中的沙砾保护自身，larva阶段是在水底孵化时不会游泳的时期。

Larva is therefore an appropriate term for that stage of an insect's life during which its final form was still hidden or masked, and New Latin l 3 a was thus applied by Carolus Linnaeus, the Swedish botanist who originated our system of classifying plants and animals.

Larva 在形容昆虫成熟之前被隐藏或遮盖的这一段时期的时候，成为一个适合的名称，这样现代拉丁语的larva 一词首先由瑞典植物学家卡罗拉斯里纽斯赋予以上含义，卡罗拉斯是首创动植物分类系统的第一人。

It will take 56 to 63 days for the frist generetion of Asiatic corn borer to develop from egg to larva, pupa, and imago in Dewu region. 7. The primary imperilment period of first gemeration of Asiatic corn borer is shooting stage. And the heading stage, grain filling stage in early sowing corn and belling stage in late sowing cron is disserved by the second generation. The imperilment degree of second generation is more serious than frist generation. 8. The best way for the prevention of black cutworm is to spray on early larva and to trap and kill with poison bait in late larva.

7第一代玉米螟主要为害拔节期玉米，第二代玉米螟主要为害处于抽雄吐丝期、灌浆期的早播玉米和处于大喇叭口期的晚播玉米，第二代玉米螟对玉米的为害程度显著高于一代玉米螟；玉米螟的为害受玉米品种影响较大，自交系苏宁三号的受害程度明显高于其他各品种；植株长势对玉米螟发生为害程度有极显著影响，表现为长势好、生长旺盛的玉米受害重，长势差的玉米受害轻；海拔高低对玉米螟发生为害的影响不大。

The neurohypophysis is only found in the dorsal region between the RPD and the PPD. The growth hormone cells do not differentiate in the PPD of the adenohypophysis, occupying 2/3 of the PPD until the larva is 5 days old. The other hormone-producing cells in the RPD and in the PT do not differetiate. In the 10-day old larva, the hormone-producing cells except the GH cells in the adenohypophysis do not differentiate. In 15-day old larva, the adrenocorticotropic hormone cells differentiate in the RPD and the other hormone-producing cells in the adenohypophysis do not differentiate. In the 30-day old larva, the all kinds of hormone-producing cells are formed in the adenlhypophysis.

神经垂体只见于RPD和PPD交界的背上方。5日龄仔鱼腺垂体内GH细胞已分化，占PPD的2/3，其他激素分泌细胞未见分化。10日龄仔鱼脑垂体内除GH细胞外，未见其他种类激素分泌细胞分化。15日龄仔鱼脑垂体RPD内ACTH细胞已分化，PPD和PI内除GH细胞外，其他种类激素分泌细胞均未分化。30日龄仔鱼RPD、PPD和PI内各种激素分泌细胞都已分化，共有6种激素分泌细胞，分别是促肾上腺皮质激素分泌细胞，催乳激素分泌细胞，生长激素分泌细胞、促甲状腺激素分泌细胞、促性腺激素分泌细胞和促黑激素分泌细胞。

It was appropriate to feed larva under the reasonable proportion of concentrated feed to succulence, and to culture larva at 2 larva/cm^2 if pupation and propagation were considered while at 4 larva/cm^2 if pupation and propagation were not considered in practice.

5在生产中，饲料以精饲料和青饲料合理搭配为宜，如果考虑化蛹繁殖，密度以2头／平方公分为宜；如果不考虑化蛹繁殖，则黄粉虫幼虫密度可以提高到4头／平方公分。

So in order to deal with the problem, both the living habit and distribution of Chironomus larva in the water treatment system and the methods in removing Chironomus larva at present were introduced in this article. Meanwhile, the relationship between its physiological characteristic and environmental factors was demonstrated. Also the research status、advantage and limitation of different methods in the remove of Chironomus larva were analyzed systematically and some scientific tendencies were prospected. It was suggested that enhancing the management to the raw water and optimizing the drinking water treatment processes were the feasible ways to effectively control the pollution.

本文首先介绍了摇蚊幼虫的生活习性及其在水处理工艺中的分布规律，然后对其生理特性与环境因子之间的关系进行了论述；并就近年来采用物理法、化学法和生物法防治水处理工艺中摇蚊幼虫污染的研究进展、现状和局限性进行了较为系统的分析，展望了摇蚊幼虫污染防治技术的研究前景，指出目前控制饮用水中摇蚊幼虫污染必须将水源水质水控制、污染治理与净水工艺处理结合起来，优化水处理工艺和强化水源水体保护是根本保障。

The fresh royal jelly is slightly ropy milk paste substance; it is the excretive mixture of nutrition gland and maxilla gland of the head of little worker bee. The worker bees use this to feed the 1-3 days' worker bee larva and drone larva, 1-5.5 days' queen bee larva and queen bee in the oviposition period.

新鲜蜂王浆是一种微粘稠乳浆状物质，是幼龄工蜂头部的营养腺和上颚腺共同分泌的混合物，工蜂用它来喂饲1-3日龄工蜂幼虫与雄蜂幼虫、1-5.5日龄蜂王幼虫和产卵期蜂王。

Insect feeding test showed that after 30 days feeding Lymantria dispar larva with potted plant tender leaves, the mortality rate of Lymantria dispar larva fed with every transgenic line was over 90%, even up to 98.9%; but the mortality rate of larva fed with non-transgenic plants was only 10%.

7饲虫实验结果表明，盆栽苗幼嫩叶片饲喂舞毒蛾幼虫30d后，各个转基因株系幼虫死亡率均在90%以上，最高达到98.9%；而非转基因植株幼虫死亡率仅为10%。

The contents of valine and leucine of the nematode are obvious higher than that of others in different kinds of amino acid of the nematode. The analysis of irritant factors playing a important role on the production of predacious organs showed that live nematode larva or its lytic solution can cause the production of predacious organs of the strain A1, but the latter produced less than the former .The live larva of the third stage produced more predacious organs than one of the first and the second stage , so the number of predacious organs that are produced by the live larva of first and the second the stage are less than the live larva of the third stage .

刺激捕食器产生的因素在线虫体来说：活的线虫幼虫和其裂解液可以刺激捕食线虫性真菌—少孢节丛孢菌菌株产生捕食线虫性结构——捕食器；但后者刺激产生的捕食器数量较少；有活力的第三期幼虫与第一、二期幼虫相比较，可以刺激菌株产生较多的捕食器；但少孢节丛孢菌对第一、二期幼虫作用速度快；与第三期幼虫相比，第一、二期幼虫易被捕获致死。

The honeybee spawns in the nest room, the larva lives in the nest room, the camp society sex life larva by the worker bee oral administration, the camp roosts the sex life the larva to take the food female bee alone to store in Yu Chaoshi the bee grain, waits the bee grain to be fed up, larva mature pupation, when emergence broken cocoon.

蜜蜂在巢室内产卵，幼虫在巢室中生活，营社会性生活的幼虫由工蜂喂食，营独栖性生活的幼虫取食雌蜂贮存于巢室内的蜂粮，待蜂粮吃尽，幼虫成熟化蛹，羽化时破茧而出。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。