好词典

excitation

UK //ˌɛksɪˈteɪʃən//US //ˌɛksaɪˈteɪʃən//

词源

源自拉丁语 'excitare',意为 '唤醒' 或 '激发',后经法语 'excitation' 进入英语。

noun

❶ 兴奋或激动的状态,通常指因某种刺激或事件引发的强烈情绪反应。

“The children were full of excitation before the school trip.”

(孩子们在去学校旅行前充满了兴奋。)

“Her voice trembled with excitation as she announced the news.”

(当她宣布这个消息时,她的声音因兴奋而颤抖。)

❶ 物理学中指原子或分子因吸收能量而从低能级跃迁到高能级的状态。

“The excitation of electrons is essential for the emission of light.”

(电子的激发对于光的发射至关重要。)

“The laser works by causing excitation in the atoms of the medium.”

(激光的工作原理是使介质中的原子激发。)

同义词:stimulation, arousal, agitation

常见短语

excitation energy — 激发能,指原子或分子从基态跃迁到激发态所需的能量。

“The excitation energy of this molecule is relatively low.”

(这种分子的激发能相对较低。)

state of excitation — 激发状态,通常用于描述原子、分子或人的高度兴奋状态。

“The atoms remain in a state of excitation for a short period.”

(原子在激发状态下保持很短的时间。)