Subject	English	Chinese
survey.	gradient measurement	梯度测量
tech.	gradient measurement in self-potential method	自然电场法梯度测量
space	gravity gradient measurement	重力梯度测量
space	gravity gradient measurement by satellite	卫星重力梯度测量
tech.	measurement of gradient	斜度测量
tech.	profiling figure of SP gradient measurement	自电梯度测量剖面图
tech.	profiling-plan figure of SP gradient measurement	自电梯度测量剖面平面图