1.
Study for Tuberculosis Models with Reinfection and Constant Immigration;
带有二次传染和常数移入的结核病模型的研究
2.
Studies on Mineral Secondary Pollution and Its Profound Problem
矿山环境二次污染及深层次问题探究
3.
a tetracycline antibiotic (trade name Minocin) used to treat a variety of bacterial and rickettsial infections.
一种用来治疗各种细菌和里克次氏体属微生物传染疾病的四环系抗菌素（商标是二甲胺四环素）。
4.
guarding against a possible secondary infection
防止可能出现的二次侵染
5.
The Reasons of the Secondary Pollution about the Water Supply Pipeline Network and Improvement Measures;
供水管网二次污染的因素及改善措施
6.
Research on Secondary Contamination of Air Conditioning Systems in Closed Environment
密闭环境空调系统二次污染问题研究
7.
Inverse Convection-diffusion Problems of Plumes and Second Contamination
高炉和二次污染物的对流扩散反问题
8.
Batch Rending System on Redevelopment of 3DSMAX
基于3DSMAX二次开发的批量渲染系统
9.
Study on the Second Development and Application of the First Census Data of Pollution Sources
首次污染源普查数据的二次开发及应用研究
10.
TRANSMISSION CAN OCCUR WITH A SINGLE ACT OF INTERCOURSE
一次的性接触就足以传染HIV/性病
11.
Just then came a second knock on the door,
就在此时，传来第二次敲门声，
12.
That's the second time he's been had up for reckless driving.
那是他第二次因为乱开车而被传讯。
13.
The Mechanical Transmission CAD System Based on VB Secondary Developing to AutoCAD;
基于VB二次开发AutoCAD的机械传动CAD系统
14.
Low-nitrogen combustion technology, smokeless and odorless, without harmful gas.
无二次污染低氮燃烧技术，无烟，无臭，无有害气体。
15.
Basic Study of the Secondary Pollutant Emissions from Incineration of the High Concentration Organic Waste Liquid;
高浓度有机废液焚烧二次污染物排放特性研究
16.
Quadratic finite volume element methods for the air pollution model in one-dimensional;
一维大气污染模型的二次有限体积元方法
17.
The Causes And Prevention Methods of Secondary Pollution of Residential Drinking Water;
居住区生活饮用水二次污染的原因与防治措施
18.
Research the Second Bio-contamination of Bucket Drinking Water and Biofilm
桶装饮用水二次生物污染及生物被膜研究