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The preys spectrum had certain selectivity,appulsive on the Lepidoptera especially the large-scale larva, appulsive on differentstand also.

对于不同类型林分也有不同趋向性,对灌木、小乔木等害虫防治效果对于比较高大树木上害虫防治效果较差。

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Second, the selectivity depends on the Coulomb interaction on the surface, not the lipophilicity.

第二,性只与表面库伦用力有关。

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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%转化率以及100%性得到了酚O-烷基化产物。

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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性比较专一生化发酵工程,且为好氧性发酵。

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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不对称氢转移反应等催化反应中,可以得到很高产率和对映性。

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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甲基吡啶转化率为99%,4氰基吡啶性为88%,收率为87。

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经济学人-科技

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。

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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择性上是十分卓越的。

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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% 的择性,与商业反应堆旗鼓相当。

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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择性的,关于优先级的。

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TED演讲(视频版)双语

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。

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六级晨读美文

We haven't found any convincing evidence that selectivity or prestige matters.

我们没有找到任何令人信服的证据表明择性或声望很重要。

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Scishow

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。

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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择性,而不仅仅是对运动的响应。

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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.

这些效率、择性和生产率的 巨大提升非常重要,因为它们保证了因为它们保证了电化学反应能够和 已高度优化的化石燃料动力反应竞争。不过啊,尼龙只是成千上万的化学品 所组成的汪洋大海中的一滴水。

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大学生活 Crash Course

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,你会想通过他们的择性,或录取率,来考虑进入每所学校的竞争有多激烈。

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麻省理工公开课:人类大脑

Right, a further bit of evidence is remember I said how, in monkeys, next door bits in MT have similar direction selectivity.

是的, 进一步的证据是记得我说过,在猴子中, MT 中的隔壁位具有类似的方向择性。

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中级英语短文

The research team developed a small molecule compound with high selectivity for LB that can provide an objective basis for early diagnosis and holds great scientific value and clinical significance.

研究团队开发了一种对路易小体具有高择性的小分子化合物,可为早期诊断提供客观依据,具有重要的科学价值和临床意义。

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TED演讲(视频版)双语

This same instability also enhances our frequency selectivity, for a given hair cell tends to oscillate best at the frequency at which it normally trembles when it's not being stimulated.

同样的不稳定性也能增强我们对频率的辨识度,因为某个毛细胞摆动的最佳频率,一般是它在不受刺激时自然抖动的频率。

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英语专业八级作文易考范文50篇背诵

While one system may conclude peer assessment retention rate, faculty resources, student selectivity, and financial resources, another system may lay its emphasis on the number of famous alumni, the student evaluation of professors and the evaluation of college students.

一种测量统仅仅包含了评估、经济实力、师资力量、学生成绩、保留率方面的考虑,其他测量统或许会更加重视著名校友的数量,老师对学生的评估,以及学生的评估。

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