短語(yǔ)詞組短語(yǔ)primary commercial energy 初級(jí)商品能源primary drive energy 一次開(kāi)采驅(qū)動(dòng)能量primary y energy 一次能源primary light energy conversion 原初光能轉(zhuǎn)換效率primary -energy saving efficiency 典型光電光熱綜合性能效率primary beam energy [物]一次束能量supply of primary commercial energy 商業(yè)性初級(jí)能源供應(yīng) 返回 primary energy