The pollution of the particle matter in the indoor air of shopping centre is serious.
结论大中型商场内存在颗粒物的污染来源，商场内空气中颗粒物污染严重。
The particle concentration is always higher in China, especially the concentration of particle matter 10(PM10).
我国大气中的粒子浓度普遍较高，特别是可吸入颗粒物PM10。
The indoor environment has been noted, but the research on the organic compounds on the inhale particle matter is less, especially the esters.
室内环境问题越来越引起关注，但是室内可吸入颗粒物中的有机化合物研究较少，尤其是其中的酯类物质，更是被研究者忽略。
The study was carried to investigate the relation between total particle matter (TPM) in leaf of flue-cured tobacco from different regions of China and chemical components of tobacco leaf.
本文对我国不同产区的烤烟烟叶总粒相物(TPM)与烟叶部分内在化学成分的关系进行了研究。
A proton is an elementary particle of matter that possesses a positive charge.
质子是带正电荷的物质的基本粒子。
How can scientists detect a particle that interacts so infrequently with other matter?
科学家们是如何探测到一种很少与其他物质相互起作用的粒子的呢？
For every matter particle there is thought to exist an antimatter partner with the same mass but opposite charge.
对于每一种物质粒子，都被认为是存在着与它具有相同质量与但电荷相反的反物质的匹配物。
As an added bonus, an "x" particle could solve another perplexing cosmological mystery: why is there more matter than antimatter in the universe?
额外的收获是，“X”粒子还能解决另一个困扰已久的宇宙谜题：为什么宇宙中物质多于反物质？
US particle physicists are inching closer to determining why the Universe exists in its current form, made overwhelmingly of matter.
美国的粒子物理学家在探索为何现行的宇宙主要由正物质组成的过程中又进了一步。
However the researchers can? T be absolutely sure that the two signals they measured were dark matter and not some other particle, which they call background.
但研究者们还是不能绝对确信他们所测到的两个信号跟暗物质有关，因为有可能是背景的其他粒子干扰所致。
To see dark matter, said Dr. Barish, scientists will have to build the world's biggest particle accelerator.
巴里什博士说，要想看到暗物质，科学家们必须要建造世界上最大的粒子加速器。
However the researchers can't be absolutely sure that the two signals they measured were dark matter and not some other particle, which they call background.
但研究者们还是不能绝对确信他们所测到的两个信号跟暗物质有关，因为有可能是背景的其他粒子干扰所致。
Two new looks at the gamma-ray sky suggest that if the mysterious matter is a particle, it is heavier than 40 gigaelectronvolts, about 44 times the mass of a proton.
两项最新伽马射线天空图的观测研究表明如果此种神秘物质是粒子，则要大约是一个质子质量的44倍，比400亿电子伏还重。
As an added bonus, an "x" particle could solve another perplexing cosmological mystery: why is there more matter than antimatter in the universe? (It's known as "baryon asymmetry" among physicists.)
额外的收获是，“X”粒子还能解决另一个困扰已久的宇宙谜题：为什么宇宙中物质多于反物质？(物理学家称之为“重子不对称”。)
Why would the particle that makes up most of the matter in the universe never have been seen in our accelerators?
马里兰大学的Sarah Eno说，“为什么占据了宇宙大部分质量的粒子在我们的加速器中就是看不到呢？”
Said Sarah Eno of the University of Maryland. "Why would the particle that makes up most of the matter in the universe never have been seen in our accelerators?"
马里兰大学的SarahEno说，“为什么占据了宇宙大部分质量的粒子在我们的加速器中就是看不到呢？”
Any such deviations could give hints of the postulated particle known as the axion, which could in turn prove the existence and nature of dark matter.
任何偏差都可能帮我们找到假想的粒子比如轴子，然后进一步验证暗物质的存在和它的性质。
The most famous duality in physics is the wave-particle duality. This one states that matter has both wave-like and particle-like properties.
在物理学上最著名的二元性例子就是波粒二象性，这表明物同时具有波和粒两种属性。
Some scientists have taken to underground searches in hopes of catching just a few out of the multitude of dark matter particles in a rare instance of actually bouncing off of a regular particle.
一些科学家寄希望于地下的搜索，当大量的暗物质粒子通过时，在极少数的情况下，会有一些微粒被正常的粒子弹开，通过捕捉正常粒子的波动就可以抓住微量暗物质的踪迹。
Recent developments in particle physics have uncovered other theoretically plausible dark matter candidates.
最近粒子物理界里的研究成果揭示了理论上暗物质的其他候选者。
The atom is accepted as the smallest particle of matter. There can be atoms of copper, for example, or of neon or of uranium or of any element.
人们普遍认为：原子是物质的最小颗粒。比如，可能有铜原子存在，或者氖原子，或者铀原子，或者任何元素的原子存在。
Only the Up and Down quarks are found inside atoms of the normal matter. The other quarks are made in particle accelerators.
普通正常物质的原子内部只有上、下夸克。而其它夸克是由粒子加速器产生的。
To uncover a new particle that straddles our visible world and theinvisible world of dark matter would unlock a new realm of physics.
发现一种横跨可见物质世界和不可见暗物质世界的新粒子，会开辟物理学的新天地。
A particle theory called "supersymmetry" predicts the existence of weakly interacting massive particles (WIMPs), which could be the particles of dark matter.
一种被称为“超对称性”的粒子理论预言了“弱作用重粒子”(WIMPs)的存在——它也许就是暗物质粒子。
A particle theory called "supersymmetry" predicts the existence of weakly interacting massive particles (WIMPs), which could be the particles of dark matter.
一种被称为“超对称性”的粒子理论预言了“弱作用重粒子”(WIMPs)的存在——它也许就是暗物质粒子。
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