短語詞組短語jewel l bearing 寶石軸承jewel l bearing manufacturing equipment 寶石軸承生產(chǎn)設備jewel bearing manufacturing equipment 寶石軸承生產(chǎn)設備hole jewel bearing 通孔寶石軸承end stone jewel bearing 端面寶石軸承conical jewel bearing 錐形槽寶石軸承recessed jewel bearing 槽形寶石軸承spherical jewel bearing 球面槽寶石軸承 返回 jewel bearing