Density of electrostatic charge
[电] 静电荷密度
🧩 词语组成解析
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
a. 静电的, 静电学的\\n[医] 静电的
🗣️ 情景例句
What did they say?
他们说什么?
No gains without pains.
不劳无获。
She heard the front door open and heavy footsteps in the hall.
她听见前门被打开，走廊里响起重重的脚步声。