Annihilation operator
[化] 湮没算符
🧩 词语组成解析
annihilation
[[əˌnaiə'leiʃən]]
n. 歼灭, 湮灭\\n[化] 消灭; 湮灭; 湮灭
🗣️ 情景例句
The signs of the city never fail to impress the foreign tourists.
外国游客无一不对该城市留有深刻的印象。
Please come here.
请来这里。
Ethanol is more effective at a concentration of 50-70 percent;
乙醇的浓度为50％至70％时比较有效，