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Engineering geology
containing
标准 水准
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地下水水质标准
criteria for groundwater
水准标尺
leveling pole
水准标尺
leveling staff
水准标尺
grade rod
水准面标记
level mark
水质
分级
标准
water standards
觇板水准标尺
target rod
觇板水准标尺
target leveling rod
饮用水标准
standard for potable water
饮用水质标准
drinking water quality standard
饮用水质量标准
potable water quality standard
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