A galvanic cell is represented by a diagram.是什么意思？

A galvanic cell is represented by a diagram.

用简式表示自发电池.

galvanic

adj. 流电的，抽搐的，以流电所产的，动电；

例句
A galvanic cell is represented by a diagram.
用简式表示自发电池.

cell

n. <生>细胞，小牢房，电池，<诗>墓穴；vi. 住在牢房或小室中；vt. 囚禁；

例句
DNA is the genetic material inside every cell that carries the blueprints for everything from hair color to the risk of cancer.
脱氧核糖核酸是存在于每个细胞内的基因物质，它承载从头发颜色到致癌风险等各种遗传型板。

is

vt.& vi. 是（be的三单形式；n. 存在；

例句
Bollinger 'RD' is a rare, highly prized wine.
博林格RD香槟是一种名贵的备受推崇的葡萄酒。

represented

v. 表现( represent的过去式和过去分词 )，代表，体现，作为…的代表；

例句
Ari Hart recently received the accolade of being represented in the Museum of Modern Art.
阿里·哈特的作品最近有幸获选在现代艺术馆展出。

by

prep. 在…旁边，表示方式，由于，经过；adv. 经过，表示保留或保存时用，短暂拜访；

例句
...expensive make-up that we saw being advertised by a beautiful model...
我们所见的由一位漂亮模特代言的昂贵化妆品

diagram

n. 图表，图解，示意图，[数]线图；vt. 用图表示，图解；

例句
This is represented in the schematic diagram below.
这正如下面的这幅简略图所示。