incidence

noun

/ˈɪnsɪdəns/

[countable, usually singular] incidence of something (formal) the extent to which something happens or has an effect发生范围；影响程度；发生率
- an area with a high incidence of crime犯罪率高的地区
- The country had the lowest incidence of AIDS cases proportional to its population.相对于人口而言，该国艾滋病发病率是最低的。
- The lack of vitamins may explain the higher incidence of heart disease.缺乏维生素也许是心脏病发病率较高的原因。
- There is a greater incidence of cancer in the families of radiation workers.接触放射性物质的工作人员，其家属的癌症发病率要更高一些。
- the highest recorded incidence of air pollution有记录以来最高的空气污染发生率
Collocations Dictionary
adjective
- great
- high
- peak
- …
verb + incidence
- have
- show
- increase
- …
incidence + verb
- increase
- decrease
- fall
- …
incidence + noun
- rate
preposition
- incidence among
- incidence in
phrases
- a decrease in the incidence of something
- an increase in the incidence of something
- a variation in the incidence of something
- …
[uncountable] (physics物理) the way in which light meets a surface入射（角）
- the angle of incidence入射角

词源late Middle English (denoting a casual or subordinate event): from Old French, or from medieval Latin incidentia, from Latin incidere ‘fall upon, happen to’, from in- ‘upon’ + cadere ‘to fall’. Sense (1) dates from the early 19th cent.

词汇	incidence
释义	incidence noun /ˈɪnsɪdəns/ /ˈɪnsɪdəns/ [countable, usually singular] incidence of something (formal) the extent to which something happens or has an effect发生范围；影响程度；发生率 an area with a high incidence of crime犯罪率高的地区 The country had the lowest incidence of AIDS cases proportional to its population.相对于人口而言，该国艾滋病发病率是最低的。 The lack of vitamins may explain the higher incidence of heart disease.缺乏维生素也许是心脏病发病率较高的原因。 There is a greater incidence of cancer in the families of radiation workers.接触放射性物质的工作人员，其家属的癌症发病率要更高一些。 the highest recorded incidence of air pollution有记录以来最高的空气污染发生率 Collocations Dictionaryadjective great high peak … verb + incidence have show increase … incidence + verb increase decrease fall … incidence + noun rate preposition incidence among incidence in phrases a decrease in the incidence of something an increase in the incidence of something a variation in the incidence of something … [uncountable] (physics物理) the way in which light meets a surface入射（角） the angle of incidence入射角词源late Middle English (denoting a casual or subordinate event): from Old French, or from medieval Latin incidentia, from Latin incidere ‘fall upon, happen to’, from in- ‘upon’ + cadere ‘to fall’. Sense (1) dates from the early 19th cent.
随便看	overfacilities overfacility overfactitious overfaint overfaintly overfaintness overfaintnesses overfaithful overfaithfully overfaithfulness overfaithfulnesses overfamed overfamous overfanciful overfancifully overfancifulness overfancifulnesses overfarther overfarthest overfastidiously overfastidiousness overfastidiousnesses overfatten overfattened overfattening