查询词典 larva

It pupates from March to April the next year. Its eclosion appears from March to April. The occurrences of larvae of the 1st, 2nd, 3rd and 4th generations are in April, June, July and September respectively. From November to December, we may adopt weeding, loosening the soil and burning surface soil and weed while cleaning garden to eliminate larva and pupa.

翌年3月上旬至4月中旬化蛹，3月中旬至4月下旬成虫羽化。4月上旬出现第l代幼虫，6月上旬出现第2代幼虫，7月下旬出现第3代幼虫，9月中旬出现第4代幼虫。11-12月可结合清园进行林地除草、松土，将表土及杂草堆成堆焚烧，消灭幼虫和蛹。

After 0.5 μg/larva propiconazole had been injected into the 4th instar larvae of S. litura for 24 h and 48 h, the reduced rates of blood corpuscle of larvae were 19.67% and 21.38%, and the reduced rates of blood content were 20.42% and 23.87% respectively.

在活体试验中，以0.5μg/头剂量的丙环唑注射斜纹夜蛾4龄幼虫，处理后24 h和48 h，试虫血淋巴中血细胞数分别下降了19.67%、21.38%，血淋巴含量分别下降了20.42%、23.87%。

Research shows that if a cat flea larva is exposed to 1030F for one hour, it dies.

研究表明，如果一只猫蚤幼虫暴露1030f一小时，死了。

The gross feeder is a man in the larva state;and there are whole nations in that condition, nations without fancy or imagination, whose vast abdomens betray them.

大食者是还处于蛹状态中的人；有些国家的全部国民都处于这种状态，这些国民没有幻想，没有想象力，只有一个出卖了他们的大肚皮。

Not only can ascarids and hookworms cause disease in their respective hosts, they are also well-known causes of larva migrans syndromes in humans, especially children.

蛔虫和弓形虫是常见的猫狗肠道内寄生虫，他们不但能使各自的宿主致病，同时也是人类，尤其是儿童幼虫移行症的重要原因。

Free-swimming larva of ascidians; they have a tail like a tadpole that contains the notochord.

自由游动的海鞘类幼体；它们有含有脊索的蝌蚪形尾巴。小女儿小女儿小女儿。

CE18 protein may be a useful antigen for the immunodiagnosis of sheep infected with the larva of cestodes, especially for Eg and/or Th.

CE18重组蛋白可作为绵羊棘球蚴病和细颈囊尾蚴病血清学诊断抗原，用于畜群活体检疫初筛试验。

Experiment results showed as follows: 1 Two kinds of reactive oxygen species exhibited remarkable damage to larvae on 3 types of different development stage.The treatment of reactive oxygen species could result in decrease of larva survival rate and inhibit metamorphosis rate of cyprid.

实验结果表明：1、二种类型的活性氧对东方小藤壶三种不同发育时期的幼虫均具有伤害作用，在其作用下，幼虫存活率的下降，变态过程受到抑制，且表现出一定的剂量效应；三种不同发育时期的幼虫对活性氧作用的敏感性存有明显的差异性，Ⅵ期无节幼虫对羟自由基的作用最为敏感。

The larvae on different development stage indicated different sensitivity to reactive oxygen species, the napuli VI showed the most sensitive. 2 Antioxidants could decrease the damage effect of reactive oxygen species on larvae in certain level.The addition of antioxidants in culture system had risen larva suvival rate and the metamorphosis rate of cyprid .

外源抗氧化剂的加入在一定程度上减弱了活性氧对东方小藤壶幼虫的伤害作用，从而提高了幼虫的存活率和变态率；在减弱活性氧对东方小藤壶幼虫的伤害作用中，不同类型的抗氧化剂对不同类型的活性氧所起的作用大小不同。

The test results of acute toxicity were examined with Pearson's degree of fitting. The results indicated that the silkworm was extremely sensitive to Chlorantraniliprole. The median lethal concentration (LC50) was 4.0905×10^(-3) mg/L and median lethal dose (LD50) was 1.1435×10^(-8) mg/larva for the 3rd instar newly exuviated larvae. No toxicity was observed when normal concentrations of Chlorantraniliprole were used to fumigate the silkworm rearing room. Both irrigation and leaf spraying with 1.25×10^(-4) mg/L Chlorantraniliprole solution showed strong systemic transmission properties in root, leaf and whole plant. The residual toxic period of this insecticide to silkworm was very long. Mulberry leaves sprayed with 1.25×10^(-4) mg/L Chlorantraniliprole solution could still cause 100% mortality of the 3 and 5 instar larvae after 60 d. Furthermore, toxic reaction was very quick. The poisoning symptoms emerged within 1~5 h after feeding on the poisonous leaves. The poisoned larvae experienced such symptoms as stopping ingestion, remaining still, vomiting slightly and body atrophy sequentially, and died ultimately.

食下毒力试验结果经Pearson拟合度检验表明，氯虫苯甲酰胺对3龄起蚕的食下致死中浓度(LC50)为4.0905×10^(-3)mg/L，致死中量(LD50)为1.1435×10^(-8)mg/头；药剂在常规浓度下对家蚕无熏蒸毒性；1.25×10^(-4)mg/L稀释药液对桑树根灌和喷叶处理，表现极强的根部、叶部和全株性内吸传导特性；药液对家蚕的残毒期很长，1.25×10^(-4)mg/L稀释药液田间喷雾桑叶，间隔60 d后采叶饲喂3龄和5龄蚕的死亡率均为100%，且中毒反应极快，添食毒叶后1~5 h出现中毒症状，经停止食桑、静伏、少量吐液、蚕体萎缩等过程后陆续死亡。

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。