mean hemispherical candle power

例句：

1. 1.The new design of the lamp has a mean hemispherical candle power of 500 lumens.
   这款新灯的灯泡具有500流明的半球形烛光功率。
2. 2.The room was dimly lit due to the low mean hemispherical candle power.
   由于低的半球形烛光功率，房间显得昏暗。
3. 3.The engineer used a special device to increase the mean hemispherical candle power for better illumination.
   工程师使用了一种特殊设备来增加半球形烛光功率，以便更好的照明。