传播的

The surest way to avoid transmission of HIV is to abstain from sexual contact.

最可靠的避免HIV传播的方法是禁欲。

ABSTRACT Communication signals travel in space with different modulation formats.

空间传播的通信信号采用了不同的调制方式。

The surface acoustic wave can disperse when the material properties of near-surface change.

材料近表面性质的变化能够导致在其中传播的声表面波发生色散。

It is a basic task of ocean acoustics to research the influence of ocean environment on sound propagation.

研究海洋环境对声传播的影响是海洋声学的基本任务之一。

Because of the exotic weeds with strong reproductive capacity, adaptability and adversity-resistance, and short of strong competitive plants and natural enemies in the local area the exotic weeds such as Aiternanthera philoxeroides, Eichhornia crassipes, Ageratina adenophorun and Ageratum conyzoides etc.

由于农林牧渔业生产、绿化美化等目的有意引进；或旅游、交通工具等无意引入；或自身扩散传播的自然入侵，外来植物一旦逃逸人为控制进入自然生态系统并能自行繁殖和扩散，形成野化种群，变成外来入侵植物，成为危害农牧业生产和破坏生态环境的有害杂草。

The attenuation law of the air shock wave during its propagation along drifts has also been discussed.

本文论述了井下发生沼气爆炸时空气冲击波的发生发展过程，以及空气冲击波沿井巷传播的衰减规律。

The principal propagator of the feast after the Conquest was Anselm, the nephew of St.

主要传播的盛宴后，征服了安瑟伦的侄子圣安瑟伦。

The way to stop the spread now is more vaccinations.

现在阻止传播的途径是注射疫苗。

The way to stop the spread now is more vaccinations.

减少传播的方法就是加强免疫接种。

STUDIES ON THE INFLUENCE OF FLOOD DISASTER ON SCHISTOSOMIASIS TRANSMISSION AND ON ITS CONTROL IN POYANG LAKE REGION Ⅰ.

洪涝灾害对鄱阳湖区血吸虫病传播的影响及其控制策略研究Ⅰ。

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。