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an·ni·hi·la·tion AHD[ə-nī'ə-lāʹshən] D.J.[əˌnaɪəˈleɪʃən]K.K.[əˌnaɪəˈleʃən]n.（名词）- The act or process of annihilating.歼灭，消灭，毁灭：消灭的行为或过程
- The condition or result of having been annihilated; utter destruction.毁灭，覆没：被消灭的状态或结果；完全毁灭
- Physics The phenomenon in which a particle and an antiparticle, such as an electron and a positron, meet and are converted completely to energy approximately equivalent to the sum of their masses.【物理学】 湮灭，湮没：一种物理现象，一个粒子和它的反粒子，如一个负电子与一个正电子相遇时，转化为与粒子总能量大约相等的能量
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