例句與造句

1. the functions which pv system controllers need to have are discussed in theory too, such as controlling of charging and discharging, adaptation of orientation and position of solar cell, maximum power point tracking ( mppt )
   本文還從理論上探討了光伏系統(tǒng)控制器應(yīng)具有的功能：對蓄電池充放電的控制，對太陽方位和高度的跟蹤，對太陽能電池最大功率點的跟蹤。
2. It's difficult to find control of charge in a sentence. 用control of charge造句挺難的