短語(yǔ)詞組短語(yǔ)Zoom Lens Ratio 投影機(jī)調(diào)焦比Change Fixed Zoom Ratio 固定無(wú)級(jí)倍率修改optical zoom ratio 光學(xué)變焦比率high ratio zoom lens 高倍率變焦距鏡頭 返回 zoom ratio