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

对于不同类型的林分也有不同的趋向,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。

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

第二,选与表面的库伦用力有关。

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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%的选得到了酚的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选比较专一的生化发酵工程,且为好氧发酵。

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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

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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氰基吡啶的选为88%,收率为87。

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liberty, Liberty Bell, Liberty Island, Liberty Party, liberty ship, libertyman, libethenite, Libia, LIBID, libidinal,

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经济学人-科技

It is this selectivity that gives these journals their prestige.

也正是种专一树立起了《自然》们的权威

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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,馆长们在购艺术品时的选上是十分卓越的。

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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% 的选,与商业反应堆旗鼓相当。

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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。

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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选的,关于优先级的。

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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或声望很重要。

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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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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.

效率、选生产率的 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 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,你会想通过他们的选,或录取率,来考虑进入每所学校的竞争有多激烈。

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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选的小分子化合物,可为早期诊断提供客观依据,具有重要的科学价值临床意义。

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TED演讲(视频版)双语精选

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.

一种测量系统仅仅包含了评估、经济实力、师资力量、学生成绩、保留率方面的考虑,其他测量系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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