Parnanthracene
[化] 双蒽; 仲蒽; 聚二蒽
🗣️ 情景例句
Strike while the iron is hot.
趁热打铁。
Solid packing and overall stuffing can prevent the cases from vibration and jarring.
坚固的木箱和箱内严密的填充可防止木箱受震、开裂。
Japan is to the east of China.
日本在中国的东部。