Cathode density
[建] 阴极密度
🧩 词语组成解析
cathode
[['kæθəud]]
n. 阴极\\n[化] 阴极
🗣️ 情景例句
autograph copies for the guests at the opening?
在展览开幕时为客人在书上亲笔签名呢
As the call, so the echo.
发什么声音，有什么回声。
At a special swimming pool in Los Angeles, children become expert at holding their breath under water even before they can walk.
在洛杉矶的一个特设的游泳池里，孩子们甚至在还没有学会走路时就已经能熟练地在水下屏住呼吸了。