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单词 knock-on
释义 knock-on
I. \ˈ ̷ ̷ˌ ̷ ̷\ noun
(plural knock-ons)
Etymology: knock on
: the action of knocking on
II. adjective
Etymology: knock on
: produced or projected as a result of the collision of an energetic particle (as a neutron or fission fragment) from outside an atom with an elementary particle inside
 < a knock-on shower of particles >
 < a knock-on atom >
 < a knock-on electron >
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更新时间:2024/9/24 10:15:59