短語詞組短語absolute specific gravity [物]絕對比重absolute gravity point 絕對重力點absolute gravity observation 絕對重力觀測absolute gravity determination 絕對重力測定absolute gravity surveying 絕對重力測量absolute gravity value 絕對重力值absolute gravity meter 絕対重力計absolute gravity measurement [地物]絕對重力測量absolute gravity datum 絕對重力基準 返回 absolute gravity