路线抽样
Sampling Method Used in Tianjin Mainline Stockyard in the Middle Route of the South-to-North Water Transfer Project
南水北调中线工程天津干线料场取样方法分析
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。
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