短語詞組短語well earth electric potential 井地電位earth surface potential 電勢(shì)earth gravitational potential model 地球重力場(chǎng)模型induced earth surface potential 地面感應(yīng)電勢(shì)earth h potential 地電位earth h potential difference 對(duì)地電位差pipeline -earth electrical potential 管地電位earth potential difference 對(duì)地電位差;對(duì)地的電位差natural earth potential 自然地電勢(shì) 返回 earth potential