短語(yǔ)詞組短語(yǔ)stageless image -converter tube 無(wú)級(jí)變像琯multistage image -converter tube 多級(jí)變像琯magnetically -focused image converter tube 磁聚焦變像琯image converter tube image -viewing tube 圖像光電變換琯 返回 image-converter tube