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In this research, a method was established to constructe deficience recombinant system of poliovirus that were composed of two instant expression ways.

在本项工作中，一种利用共转染方法和单转染方法的缺陷型脊灰病毒重组体构建方法得以建立，其包括两种瞬时表达系统。

The positive rates of neutralization antibodies against poliovirus types Ⅰ、Ⅱ and Ⅲ were 97～100% with geometric mean titre was in the range of 56～100% when both type of vaccines was used.

结果表明，两种剂型疫苗免疫后的脊灰Ⅰ、Ⅱ、Ⅲ型中和抗体阳性率均为97～100％，GMT在56～105之间。在免疫效果方面，两者间无显著性差异。两种疫苗的免疫效果十分理想。

An experiment is done to measure the dispersion characteristics of the symmetrical mode. The experimental results show good agreement with the theoretical value. In addition, an experimental study of the πline is made.

同时加工制作了作为脊加载环板线一种发展型的π型慢波线，并进行了实验研究，实验证明，π型慢波线是一种宽频带大功率的慢波系统。

The mycobacterial antigens are not affected by the immune state of the host. In the present study, three different antibodies are used to detect the tubercular antigens in the mononuclear macrophages in CSF and PB.

本实验通过对脑脊液和外周血中单核细胞内三种不同的结核抗原的检测，比较三者对结核性脑膜脑炎诊断的意义，为结核性脑膜脑炎的诊断寻求一种更有效的方法。

Biomass of 10 plant species including Castanopsis fargesii,Pleioblastus amarus, Lindera strychnifolia,Vaccinium bracteatum,Ficus simplicissima(approximately account for 37%of total plant species in shrub layer) account for 84.15%of total biomass in shrub layer.Biomass of Woodwardia japonica and Blechnum orientale account for 93.3%of total biomass in herb layer.

在灌木层中，丝栗栲、苦竹、乌药、乌饭、三龙爪等10种灌木层植物(约占总灌木层种类的37％)占灌木层总生物量的84.1％；在草本层中，狗脊和乌毛蕨2种植物占草本层总生物量的93.3％，这说明林下灌木层和草本层植物的生物量主要集中在少数植物种类中。

Any of several African antelopes of the genus Kobus, having curved, ridged horns and frequenting swamps, rivers, and other bodies of water.

水羚羚羊属的几种非洲羚羊之任一种，生有弯曲和脊状的角，常出没于沼泽、河流和其它水体

Phragmites Australis, Ael uropus liitoralis, Zoysiamacrostachya, Messerschmidia sibirica, Limonium bicolor were the main vegetation types in the chenier seaside, but in the chenier plain, Artemisia annua, Artemisia mongolica and Herba Heteropappi Altaici occurred frenquently.

通过对无棣贝沙堤植物多样性的分析发现，样方内共出现物种20余种；同时，贝沙堤向海面和贝壳滩脊、向陆一面分别分布着以芦苇、獐茅、大穗结缕草、二色补血草、砂引草以及以青蒿、蒙古蒿、阿尔泰紫菀为优势种的群落。

Any of several rushlike plants,especially of the pine barrens of southern United States.

几种类似于灯心草的任何一种，尤指美国南部松树脊地的任何一种。

Based on deeply-etched SiO2 ridge waveguides which support sharp bendings, a compact multimode interference power splitter was designed.

基于深刻蚀SiO2脊型波导的紧凑型多模干涉功分器，采用深刻蚀SiO2脊型波导，利用其弯曲半径小的优点，设计了一种紧凑型1×2多模干涉功分器。

The fall-down stems chiefly distribute at the middle of slope and both side of the ridge. Their appearing frequency is in positive ratio to slope; The ones at middle of the slope are mainly shadow-intolerant tree species of small size, those at the side slope of ridge are mostly the big-sized dominant species in the community.

倒伏木主要分布在海拔1200～1800m之间坡面中部和顶脊两侧，发生频率与坡度成正比；坡地中部以中、小径级阳性树种为主，山坡顶脊两侧的倒伏木则多为大径级的群落优势种。

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。