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例句
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柯林斯词典释义
英英词典释义
行业词典释义

福克斯词典 \ 英汉词典 \

selectivity是什么意思？

selectivity

英[səˌlek'tɪvətɪ] 美[sɪˌlɛkˈtɪvɪti, ˌsilɛk-]

n. 选择性，专一性；

副词：selectively;

形容词：selective;

例句

Selectivity of human migration long been the focus of demographers and economists. 人口迁移的选择性一直以来都是人口学家和经济学家关注的焦点.
These reactions catalyzing oxidation of alcohol - OH groups have high yield and selectivity. 使用的催化剂对醇羟基的氧化具有高度的选择性并有很高的转化率.
The results demonstrate that this catalyse has an excellent activity and selectivity this reaction. 结果表明该催化剂对此合成反应具有很高的催化活性和产物选择性.
The mesh size selectivity can be expressed by logistic or Richards equation. 网目选择性常以Logistic或Richards方程来描述.
A hydrocracking catalyst with high selectivity to middle distillates was developed. 开发了一种具有较高的中油选择性的加氢裂化催化剂.
It'shows a thousandfold selectivity for fluoride over other common anions. 它对氟离子的选择性比其它普通阴离子高几千倍.
The selectivity of extractant is high and only Au, Pd , Hg ete. are extracted. 该萃取剂选择性高,它仅萃取Au 、 Pd和Hg等几种元素.
The Endo - conversion 、 Exo - yield andExo - selectivity are 96.46 % 、93.12 % and 96.54 % respectively. Endo -THDCPD 转化率为96.46%,Exo -THDCPD 收率为93.12%,选择性为96.54%.
The advertisement audience has the greatly strengthened selectivity and elusion to the media advertisement. 广告受众对媒介广告有极强的选择性和回避性.
The DM membrane possesses fairly good selectivity, chemical stability and scale stability. DM阳极隔膜具有好的选择性、化学稳定性和尺寸稳定性.

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同义词

selectivity的同义词之：
option

柯林斯高阶英汉双解学习词典释义

ADJ-GRADED

选择性的;有选择的;选取少量的

A selective process applies only to a few things or people.
例句
Selective breeding may result in a greyhound running faster and seeing better than a wolf. 选择性交配繁殖有可能培育出比狼速度更快、视力更佳的灵犭是。 ...selective education. 尖子生教育
ADJ-GRADED

仔细挑选的;严格筛选的

When someone is selective, they choose things carefully, for example the things that they buy or do.
例句
Sales still happen, but buyers are more selective... 销量仍在，但购买者更加挑剔。 If public figures seek publicity to further their careers, they can't be selective about it. 如果公众人物想通过吸引公众的关注来推进事业，他们可能会不加选择。
ADJ-GRADED

(记忆)选择性的，只记一部分的

If you say that someone has a selective memory, you disapprove of the fact that they remember certain facts about something and deliberately forget others, often because it is convenient for them to do so.
例句
We seem to have a selective memory for the best bits of the past... 我们似乎只记得过去最美好的时光。 Mr Robins, suffering from selective amnesia about his role in the affair, was contradicted in nearly every instance by other witnesses. 对于自己在该事件中所扮演的角色，罗宾斯先生患上了选择性失忆症，因此几乎在每次庭审中都会受到其他证人的反驳。

英英词典释义

Noun
1. the property of being selective

行业词典

体育：选择性；
化学：选择性；
化工：选择性；
医学：选择性：在药理学上，指药物产生所需效应与不良效应的剂量关系；
电子学：选择性；
电工：选择性；
通信：选择性；对电路或器件，仅让某一频率的信号通过而阻止其他频率的信号的能力。；
铁道：选择性；

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