相信有人帶水平儀去檢查過,說那裏的坡度是2度,不是很高。鐵礦如果磁性很高幹擾地球重力場?我是不會再去了哈哈哈
相信有人帶水平儀去檢查過,說那裏的坡度是2度,不是很高。鐵礦如果磁性很高幹擾地球重力場?我是不會再去了哈哈哈
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