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And it mainly includes the action of 1,3-diethylene alkylation and acidyl; the action of addition of carbonyl compound; the action of chlorortrimethys:lane and the reaction of diethy lene.

含硫碳负离子─—1,3-二噻的合成方法及其在有机合成上的应用进行比较系统的介绍,主要介绍1,3-二噻的烃基和酰基反应,与羰基合物的加成反应,与氯硅的反应及1,3-二噻的还原反应。

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Through monitoring at Wuying National Forest Park in Yichun,the authors find that the result of Lenard effect is the most notable in all generable mechanisms of NAI.

通过五营国家森林公园负离子浓度的监测发现,在空气负离子产生的各项机理中,勒纳尔效应的效果是最显著的。

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The characteristic of this air conditioning is to carry water of eject mist shape, absorb pelagian the bacterium in air, dirt and insalubrious gas, produce an anion.

该空调装置的特点是通过喷射雾状水,吸取浮游在空气中的细菌、灰尘及身体有害的气体,并产生出负离子

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In this paper the relationship between the crystal forms and the growth mechanism of quartz and tinstone under the hydrothermal solution conditions has been studied.

本文研究了热液条件下,水晶和锡石的结晶形态和生长机制的关系,提出了水晶和锡石的生长基元为配位负离子多面体结构。

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In the wash solution, these positively charged cationics adsorb to the negatively charged surface of fabrics.

在溶液中,这些带正电的阳离子吸附在表面带负离子的织物上,起到润滑作用。

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经济学人(汇总)

Among its popular products were " negative- ion" sanitary pads that claimed to prevent menstrual cramping and cervical cancer.

该公司最受欢迎的产品之一是“负离”卫生巾,声称可以预防经痛和宫颈癌。

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Scishow 精选系列

Instead, the pressure arranged the helium and sodium into a kind of 3-D checkerboard pattern, forcing pairs of electrons to separate and basically hang out on their own in between the helium atoms, almost like a negatively charged ion without a nucleus.

相反,高压将氦原和钠原以类似3D立体棋盘的模式进行组合,强迫电对分开,基本独悬浮于氦原之间,近似没有原核的负离

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超女 第02季 S02

Yes. High levels of polyatomic anions released in the atmosphere.

大量的多原负离释放进了大气中。

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The Early Sessions

The negative ions are of help, but you could not produce such conditions. But the attempt to produce advantageous conditions is in itself of help in any case.

负离是有帮助,但你们产生不了这样的件。但试图产生有件本身,在任何情况下是有帮助的。

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早期课95

These particles contain both positive and negative ions within their own unitary system, for they are of course also units in themselves.

在它们自己的元系统内,这些粒同时包含正离负离,因为它们本身当然也是元。

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超女 第02季 S02

We got something! A huge release of anions.

有情况了 大量负离释放。

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Scishow 精选系列

They're compounds made up of positive and negative ions, usually formed when an acid reacts with a base.

它们是由正离负离组成的化合物,通常在酸与碱反应时形成。

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Crash Course Pods: The Universe

You have positive ions, the protons, and you have negative ions, that's the electrons.

你有正离,也就是质,你也有负离,那就是电

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SciShow - Chemistry

Researchers are still looking for practical uses for ortho-diethynylbenzene dianion.

研究人员仍在寻找邻二乙炔基苯二负离的实际用途。

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经济学人 Science and technology

The resulting positive and negative ions are held together by electrostatic forces a process called ionic bonding The repetitive order in which the shells are filled in each row means that elements in each column of the table.

形成的正离负离通过静电作用力结合在一起,这个过程称为离键合。每行中电壳层依次填充的重复顺序意味着表格中每一列的元素。

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Veritasium真理元素

Here's a video I originally titled, " Are Negative Ions Good For You? " Which is a question nobody asked ever.

这是我最初命名为“负离对你有好处吗? ” 的视频,这是一个从未有人问过的问题。

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Boost Your Biology with Lucas Aoun

So we get more of the earth's negative ions, or I love to hang out on my PEMF mat too.

所以我们能获得更多的地球负离,或者我喜欢躺在我的脉冲电磁场垫

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英文打卡

668. It gives off negative ions.

668. 它释放负离

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