Epidemiologists from the WHO African Regional Office have arrived to assist both countries, and personal protective equipment (PPE) and sampling equipment are en route to Lusaka.
世卫组织非洲区域办事处多名流行病学家已赶赴现场协助这两个国家开展工作，同时，正向卢萨卡市运送个人保护装备(PPE)和抽样设备。
According to different planning condition, relevant sampling strategy could be set flexibly, so that the planning time and route quality could be coordinated to achieve tactical goal.
根据规划条件采取不同的采样策略，可以在规划时间和航路质量之间实现协调以满足不同的战术要求。
Its growth status and distributions in Zhuhai City were studied by route survey and plot and line transect sampling.
结合线路调查、样方调查和样带调查法，分析研究了珠海市水松林的分布现状和发展趋势。
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