The wellhead area is crowded with metal pipe work, metal walkways above and below, together with other metal obstructions.
井口地区遍布金属管，金属管道与其它金属障碍物一起或在上方或是下方。
A well in which the fluid flows to the surface under its own pressure. The recharge area for the aquifer is higher in elevation than the wellhead.
在自喷井中流体在其自身的压力下流至地面。含水层的补给区的海拔高于井口装置。
The main measures of groundwater protection are groundwater vulnerability assessment and wellhead protection area delineation.
进行地下水脆弱性分区评价和水源保护区划分是对含水层进行保护的主要手段。
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