查询词典 moth

Studies on the toxicity of avermectin series to the diamondback moth,Plutella xylos-tellaL.

系统研究了阿维菌素系列化合物在不同温度和光照下对小菜蛾的毒力效应。

Construction and Analysis of the Natural Population Life Table for Continuous Generation of the Diamondback Moth, Plutella xylostella L.

小菜蛾自然种群连续世代生命表的组建与分析。

To provide data for toxicity assessment of avermectin on diamond back moth, Plutella xylostella, the leaf protection role of avermectin was studied.

尝试采用叶片保护率评价阿维菌素对小菜蛾2龄、3龄幼虫的毒力，以期为该药毒力的准确评价提供资料。

In this study, the cDNA fragments encoding α subunit of nicotinic acetylcholine receptor was cloned from the diamond back moth, Plutella xylostella with RT-PCR techniques. The amplified fragments are 425 nucleotides in length, from which 141 amino acids were deduced.

测序结果显示，扩增的目的基因片段包含了nAChRα亚基的三种亚型，分别命名为Pxal、Pxa2、Pxa3，都具有典型的α亚基的结构：两个相邻的半胱氨酸；形成胞外环的15个氨基酸；与烟碱和α银环蛇毒素结合有关的氨基酸残基。

Diamondback moth,Plutella xylostella L.,a cosmopolitan pest of crucifers ,had shown resistance to more than 50 insecticides which had brought large difficulties in chemical control of pests.

小菜蛾是一种世界性十字花科蔬菜害虫，目前已对生产上常用的杀虫剂产生了不同程度的抗药性，给药剂防治带来很大的困难。

Expression of Bm-l(3)neo18 was down-regulated at egg stage, and up-regulated at larval, pupal and moth stages. Besides, a tissue-specific differential expression was also observed.

该基因除在家蚕卵期的表达量较低外，在幼虫、蛹和蛾期均有较高表达，且存在组织差异性。

Resistance. The results indicated that larval mortality of the transgenic cottons on the insect of the second instar feeding with Zhongmiansuo 41 was significant higher than on Zhongmiansuo 23, and the mortality of the rest of instar larvae, the period of larvae,the pupate rate of larvae and the rate of larva developed into moth of S.litura hadno significant difference compared with control.

室内应用中棉所 45 、中棉所 41 两种转双价基因棉品种与对照品种中棉所 23 的顶端展开的第 4 张叶片，分别饲喂斜纹夜蛾 Spodoptera litura 幼虫，考察对幼虫、蛹、成虫的影响，编制并分析实验种群生命表，明确上述两种转双价基因棉对斜纹夜蛾的抗性作用。

The sloth pays such little attention to its personal hygiene that g reen algae grow on its coarse hair and communities of a parasitic moth live in the depths of its coat producing caterpillars which graze on its mouldy hair.

树獭即不讲究卫生，以至于它粗糙的毛发上生出绿苔，成群的寄生蛾生长在它的皮毛深处，变成毛毛虫，并以它的脏毛为食。

More mountains; bluish beauties never attainable, or ever turning into inhabited hill after hill; south-eastern ranges, altitudinal failures as alps go; heart and sky-piercing snow-veined gray colossi of stone, relentless peaks appearing from nowhere at a turn of the highway; timbered enormities, with a system of neatly overlapping dark firs, interrupted in places by pale puffs of aspen; pink and lilac formations, Pharaonic, phallic,"too prehistoric for words"; buttes of black lava; early spring mountains with young-elephant lanugo along their spines; end-of-the-summer mountains, all hunched up, their heavy Egyptian limbs folded under folds of tawny moth-eaten plush; oatmeal hills, flecked with green round oaks; a last rufous mountain with a rich rug of lucerne at its foot.

山叠山；淡青色的美景我从未看清楚，一山接一山之后出现了人迹炊烟；东南部，重峦叠障；覆着雪脉的摩天灰色石碑，连绵的尖峰在高速公路的转弯处突然现露出来，幽深的林阵，与整齐的暗黑色枞树完全重叠，又被白杨树柔白的烟雾切断；粉色和淡紫色的组合，是属于法老的，是属于阳器崇拜的，&太是史前的了叫人无话可说&；黑色熔岩山岗；早春的山峦，沿山背到处是幼象的细毛，—夏末的山峦，全都驼着背，它们沉重的埃及式肢体摺叠在黄褐色厚绒布纹里；燕麦片山群，点缀着绿色的圆椽树；最后一座红山，山脚布满一片繁茂的紫花苜蓿。

Salvadorian president Saca says his country is ending its military presence in Iraq at the end of this moth.

萨尔瓦多总统萨卡可说在这个月底他的国家的军队要结束在伊拉克的留守。

It was just a normal day of school

那只是上学的普通一天

Which is a very good reference in this issue.

这是一个在这个问题上很好的参考。