单词	起重支点
释义	起重支点jacking point
随便看	product-cycle theorem product data product data management product data management (pdm) product data markup language product decisions product deletion product delineation product demodulator product departmentalization product design product detector product development product development decisions product development strategy product-development strategy product development system product development system--pds product development system，pds product differentiation product dimension product-- disintegration product disposal product distribution product distribution distortion