变焦距聚光镜variable: adj. 1.易变的,变化无常的,无定的 (opp. c ...focus: n. (pl. focuses, foci ) 1.【物 ...condenser: n. 冷凝器;凝汽器;电容器;聚光器;【纺织;印染】集棉 ...variable focus condenser: 变焦聚光镜; 可变焦距聚光镜variable condenser: 可变电容器下载手机词典可随时随地查词查翻译