查询词典 Dryopteris

Objective To investigate the killing effects of different extracts of Euphorbia kansui Liou Mass and Dryopteris Crossirhizomz on mosquito larva.

目的 了解甘遂和贯众不同提取液对蚊幼虫杀伤的作用。

Results The killing effects of different extracts of Euphorbia kansui Liou Mass and Dryopteris Crossirhizomz had big differences.

结果 2 %甘遂和贯众草药的乙醚、乙醇提取液对致倦库蚊幼虫的杀伤分别高达 95 0 %± 4 4 %，90 0 %± 3 5 %，83 0 %± 0 6 %与 75 0 %± 2 0 %。

In addition, the ultra-structures of Dryopteris crassirhizoma Nakai. were compared with those of other ferns.

本文还对绵马鳞毛蕨和其它蕨类植物精子的超微结构特征进行了比较。

The experiments in the fields suggested that both glyphosate and paraquat could prevent the growth of Pteridophyta, Dryopteris erythrosora 0. Ktze. and Osmunda claytoniana L., effectively.

以红盖鳞毛蕨和绒紫萁为指示植物进行田间试验，结果表明百草枯和草甘膦对这些蕨类植物都可以起到很好的防除作用，但反应时间和表现症状有差异。

The experimental study of estrogenic activities of five kinds of Chinese herbal medicines Use uterus growth test and reporter gene technique to study the estrogenic activity of Selaginella tamariscina, Pinus massoniana Lamb, Corallodiscus flabellate, Dryopteris sublaeta Ching et Hsu and Leonurus heterophyllus Sweet.

卷柏等5种中药植物雌激素活性筛选的实验研究采用小鼠子宫增重实验结合荧光素酶报告基因技术，对卷柏、松针、益母草、石胆草及贯众等五种中药进行了植物雌激素活性的研究。

Slender shield fern of moist woods of eastern North America; sometimes placed in genus Dryopteris .

北美洲东部雨林地区的一种薄叶盾蕨；有时归为鳞毛蕨属。

Any of various ferns of the genera Dryopteris or Polystichum or Lastreopsis having somewhat shield-shaped coverings on the sori.

孢子外覆有盾形罩套的鱗毛蕨科或水龙骨科的蕨类植物。

AIM: To study the chemical constituents of Dryopteris sublaeta Ching et Hsu.

目的： 研究浅裂鳞毛蕨(Dryopteris sublaeta Ching et Hsu)的化学成分。

A new flavanone from Dryopteris sublaeta;2. Isolation and Structure Identification of a New Flavanone from Dryopteris sublaeta;3. RESULTS Five compounds are isolated from the ether fraction of 70% acetone-extracts,and their structures were identified as(2S)5,7-dihydroxy-6,8-dimethyl flavanone desmethoxymatt.

结果浅裂鳞毛蕨地上部分用体积分数为70%丙酮提取液乙醚萃取部位分离得到了5个化合物，分别鉴定为：(2S)5，7-二羟基-6，8-二甲基二氢黄酮，(2S)5，7-二羟基-6，8-二甲基-4′-甲氧基二氢黄酮，(2S)5，7，2′-三羟基-6，8-二甲基-二氢黄酮，(2S)5，7，4′-三羟基-3′-甲氧基-6，8-二甲基二氢黄酮，(2S)5-羟基-4′-甲氧基-6，8-二甲基二氢黄酮-7-O--βD-葡萄糖苷。

The results are as follows:① The population structure of Picea schrenkiana-Dryopteris filix-mas pure stands is stable, the patterns of age, diameter and the height of Picea schrenkiana-Dryopteris filix-mas pure stands are all in inverse J-shaped curves, indicating a typical uneven-aged stand structure.

以西天山国家自然保护区内1 hm^2原始鳞毛蕨(Dryopteris filix-mas)天山云杉纯林临时标准地调查材料为基础，分析鳞毛蕨天山云杉林胸径、树高和年龄结构、种群存活曲线以及基本测树因子之间的相互关系。

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。