在任何时候，你都能判断谁是正电性的。
So, at any moment, you know in any bond which is the more electropositive.
并根据井冈霉素分子中仲胺基在碱性介质中显正电性的特点，设计了一步法提取井冈霉素的工艺路线。
According to the positive electrical property of imino group in Validamycins molecular in alkaline media, a one-step technology of extraction Validamycin was proposed.
研究者发掘出生成更高质量的晶状半导体精密方法，以减少电子或者正电穴由于杂质而受阻的可能性。
Researchers developed sophisticated methods to grow high-quality semiconductor crystals, reducing the likelihood that electrons or holes will become trapped by defects.
正电子断层扫描仪进行人体扫描的时候，病人被注入正电子放射性核素，然后推入检测环。
During a PET scan, the patient is injected with radioactive tracer molecules that emit positrons when they decay.
这也是很合理的，因为Z就是原子序数，假设原子序数是，那就有3个电子，那我们就希望,性原子有个带3个正电荷的原子核。
So, let's say we have an atomic number of 3, 3 that means we have 3 electrons, so we better hope to get our neutral atom that we have a charge of plus 3in the nucleus.
通话20分钟后，医生给每个人注射一种具有放射性的糖，然后利用正电子发射断层摄影仪对他们的大脑进行扫描。
Twenty minutes into the call, clinicians injected a radioactive form of sugar into each person, then began imaging their brains with a Positron Emission Topography machine.
由放射性钠衰变产生正电子，冷却后形成一个由大约100万个正电子组成的体积同样大小的粒子云团，这团正电子被存放在相邻的一个容器中。
The positrons, produced by the decay of radioactive sodium, are cooled into a similarly sized cloud of around 1m particles and held in a neighbouring trap.
同时，来自放射性钠一种形式的衰减正电子被慢慢分开且累积起来。
Meanwhile, positrons from the decay of a form of radioactive sodium are separately slowed and accumulated.
这是因为放射性核素在这巨大的爆炸能量中形成，其中一些放射出正电子而衰变。
This is because radioactive nuclear elements are formed in the giant outbursts of energy, and some of these decay by releasing positrons.
粒子是从天然放射性蜕变得到的带正电的氦核。
Alpha particles are positively charged helium nuclei obtained from natural radioactive decay.
任何一种由碲和另一种正电性更强的元素组成的二元化合物。
Any binary compound of tellurium with other more electropositive elements.
我们已经展示了人工放射现象的可能性，这种放射现象的特征是用以射线轰击用咄硼和镁中的正电子或负电子。
We have shown that it is possible to create a radioactivity characterized by the emission of positive or negative electrons in boron and magnesium by bombardment with alpha rays.
正电性荷电材料表面带有较强的正电荷，对负电性的细菌、病毒和细菌内毒素有较强的亲和作用。
Positivly charged material carries stronger positive charge on its surface and has a stronger affinity for bacterium, virus and bacterial endotoxin which cany negative charge.
正电子寿命谱实验，证实了辐化体系中的能量转移和辐射保护效应及此经验公式的有效性。
The energy transfer and radiation protection effect in radiation chemical system and the efficiency of our empirical formula have been verified by o-ps lifetime experiment.
介绍了一种奇特原子-正电子素的基本性质及作为探针研究化学反应历程、探测中间产物的实用性。
The characteristics of positronium, a kind of exotic atoms, and the applicability of using it to probe the reaction mechanism and the active intermediates are briefly introduced.
保持各个光电倍增管的增益一致性对正电子发射断层成像（PET）的质量至为重要。
To make all PMTs' gains identical through auto-adjustment is important for ensuring the PET imaging quality.
在正电性纳米银上，当分子的浓度较大时观察到荧光猝灭，当分子的浓度较小时观察到荧光增强。
On PCS, the fluorescence of RhB is enhanced when the concentration is low, whilst when the concentration is high the fluorescence of RhB is quenched.
在本文中推导了多指数函数模型在正电子湮没寿命谱拟合中的可用性。
In this paper, the usability of multiple-exponential function model in fitting the positron annihilation lifetime spectrum is demonstrated.
通常是应用现代的成像技术来进行研究，比如电脑断层扫描，正电子发射断层扫描技术，以及功能性核磁共振成像，正如我之前所说，这些技术可以让你看到大脑的活动区域。
Typically, these are recent imaging methods like CAT scan and PET scan and fMRI which, as I said before, show parts of your brain at work.
控制参数的引入可以使电压无功控制装置根据系统运行状态不断修正电压和无功的上下限值，从而使控制策略具有一定的自适应性。
The control parameter can help to modify the voltage and reactive power's upper limit and lower limit, which make the control tactics adaptive.
控制参数的引入可以使电压无功控制装置根据系统运行状态不断修正电压和无功的上下限值，从而使控制策略具有一定的自适应性。
The control parameter can help to modify the voltage and reactive power's upper limit and lower limit, which make the control tactics adaptive.
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