Total luminous flux
[电] 光源在各方向的总光线发射
🧩 词语组成解析
🗣️ 情景例句
May I make an appointment now?
现在可以预约门诊吗？
I picked up my cards.
我捡起了我的卡片。
They feared that the mummy would fall to pieces when they cut it open, but fortunately this has not happened.
他们曾担心在把木乃伊切开后，它会散成碎片，但幸运得很，这种情况并未发生。