The preys spectrum had certain selectivity,appulsive on the Lepidoptera especially the large-scale larva, appulsive on differentstand also. 对于不同类型的林分也有不同的趋向性，对灌木、小乔木等的害虫防治效果显著，而对于比较高大树木上的害虫防治效果较差。
Second, the selectivity depends on the Coulomb interaction on the surface, not the lipophilicity. 第二，选择性只与表面的库伦作用力有关。
The phenols were O-alkylated with 100% conversion and 100% selectivities using phenacyl bromide and benzyl bromide as alkylating reagents. 用溴代苯乙酮和溴苄为烷基化试剂,以高产率和100%的转化率以及100%的选择性得到了酚的O-烷基化产物。
Glutamic acid fermentation is a kind of biochemistry fermentation engineering.Its selectivity is undivided comparatively.It is oxybiotic fermentation and is strict to air quality. 谷氨酸发酵是一种对发酵菌种选择性比较专一的生化发酵工程,且为好氧性发酵。
The invention is applied to the catalytic reactions such as aromatic ketone unsymmetrical hydrogen transfer reaction and can achieve very high yield and enantiotropic selectivity. 此发明应用于芳香酮的不对称氢转移反应等的催化反应中，可以得到很高的产率和对映选择性。
Cyanopyridine,intermediate of rimifon, was synthesized from 4-picoline using vanadium oxide as a catalyst in a fixed-bed reactor, reached 99% conversion of 4-picoline, 88% selectivity and 87. 以4甲基吡啶为原料,在固定床反应器中通过含氧化钒的催化剂发生气固相接触氨氧化反应制备雷米封中间体4氰基吡啶,4甲基吡啶的转化率为99%,4氰基吡啶的选择性为88%,收率为87。
It is this selectivity that gives these journals their prestige.
也正是这种专一性树立起了《自然》们的权威性。
BBC 听力 2016年7月合集
Really the selectivity of the curators in purchasing these artworks was quite exceptional.
确实，馆长们在购买这些艺术品时的选择性上是十分卓越的。
TED演讲（视频版） 2022年10月合集
We achieved selectivity of more than 80 percent, a value that is on par with commercial reactors.
我们实现了超过 80% 的选择性，与商业反应堆旗鼓相当。
2023年名人高校毕业演讲
By contrast, trained attention is about selectivity, about priority.
相比之下，训练有素的注意力是关于选择性的，关于优先级的。
TED演讲（视频版）双语精选
This active process also enhances our frequency selectivity.
有源放大过程也能增强我们对频率的辨识。
六级晨读美文
We haven't found any convincing evidence that selectivity or prestige matters.
我们还没有找到任何令人信服的证据表明选择性或声望很重要。
Scishow 精选系列
And the channel's selectivity for sodium is one reason why the best salt substitute out there, potassium chloride, still isn't very good.
通道对钠的选择性是导致最好的盐替代品，也就是氯化钾，仍然不是很令人满意的原因之一。
麻省理工公开课：人类大脑
You can think about how you would use this phenomenon to ask whether there's direction selectivity, not just responses to motion, in human MT.
你可以思考如何利用这种现象来询问人类机器翻译中是否存在方向选择性，而不仅仅是对运动的响应。
TED演讲（视频版） 2022年10月合集
These large improvements in efficiency, selectivity and production rates are very important because they will ensure that electrochemical reactions are competitive with fossil-fuel-powered ones which are already highly optimized.
When you're ready to apply, you'll want to think about how competitive it will be to get into each school by looking at their selectivity, or rate of admission.
当你准备申请的时候，你会想通过他们的选择性，或录取率，来考虑进入每所学校的竞争有多激烈。
英语百科
Selectivity
Selectivity may refer to:
Choice, making a selection among options
Discrimination, the ability to distinguish small differences
Socioemotional selectivity theory, in social psychology