density of charging current

例句：

1. 1.The density of the charging current is crucialfor the efficiency of the battery.
   充电电流的密度对于电池的效率至关重要。
2. 2. The engineers carefully measured the density of the chargingcurrent to ensure safety.
   工程师们仔细测量了充电电流的密度以确保安全。
3. 3. Thedensity of the charging current can vary greatlydepending on the type of battery and itsusage.
   充电电流的密度可以根据电池的类型和使用情况有很大的变化。