zzcnhic 发表于 2017-7-8 00:40:17

ASTM G187 − 12a

ASTM G187 − 12a
Standard Test Method for
Measurement of Soil Resistivity Using the Two-Electrode
Soil Box Method

admin 发表于 2017-7-9 14:18:02

谢谢您的分享,金币已奖励!
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