| 单词 | particle |
| 释义 | particle (pɑːʳtɪkəl ) Word forms: particles 1. countable noun A particle of something is a very small piece or amount of it. ...a particle of hot metal. There is a particle of truth in his statement. [+ of] ...food particles. 2. countable noun In physics, a particle is a piece of matter smaller than an atom, for example an electron or a proton. [technical] 3. countable noun In grammar, a particle is a preposition such as 'into' or an adverb such as 'out' which can combine with a verb to form a phrasal verb. Collocations: iron particles Unless, of course, a gust of wind delivers a plume of iron particles. Retrieved from Wikipedia CC BY-SA 3.0 Iron particles produced by manmade pollution are also potent fertilizers, she and others have found. Retrieved from Wikipedia CC BY-SA 3.0 The heated, single-use eye masks activate when the iron particles in them meet oxygen in the air when you open them up. The Sun They're filled with iron particles that react with oxygen to heat up as soon as you take the mask out of the packet. The Sun Part of this leachate consists of iron particles from deeper in the soil. Retrieved from Wikipedia CC BY-SA 3.0 They were stunned when they found minute particles of gold. Times, Sunday Times The minute particles in this new all-over powder save it from becoming too glittery, instead creating a light-catching sheen. Times, Sunday Times They work by literally blasting minute particles of chemicals a couple of millimetres beneath the skin. Times, Sunday Times Minute particles of soot floating in the atmosphere absorbed moisture and made fog far more easily than in clean air. Times, Sunday Times Virus spores in the ground are blown into the atmosphere by the storms with the minute particles then acting like urban smog or acid rain. Retrieved from Wikipedia CC BY-SA 3.0 Boffins called it 'a great day to be a particle physicist'. The Sun He grew up to be a nuclear and particle physicist. The Times Literary Supplement After the war he went to school and university, specializing as a nuclear and particle physicist. Retrieved from Wikipedia CC BY-SA 3.0 For instance, many aspects of quantum mechanics or general relativity may sound counterintuitive to a layman, while they may be intuitive to a particle physicist. Retrieved from Wikipedia CC BY-SA 3.0 Particle physicists developed a stronger aluminium for the domed ceiling. Times, Sunday Times New cars can emit 1,000 times more particle pollution from their tyres than their exhausts, a study has found. Times,Sunday Times Particle pollution from wood burning on fires lit even for just a short time each evening damages the quality of public health. Times, Sunday Times Not only did this create small particle pollution, it also played a part in creating ozone pollution. Times, Sunday Times Officials said that particle pollution was the worst on record. Times, Sunday Times In particular, recent studies have shown for the first time that small particle pollution can cause cardiovascular problems, as well as lung and respiratory diseases. canada.com Conventional physics considers space to be a vacuum through which light and other particles travel under the influence of the fundamental forces, including gravity. Times, Sunday Times As particles travel through the tracker the pixels and microstrips produce tiny electric signals that are amplified and detected. Retrieved from Wikipedia CC BY-SA 3.0 These particles travel in circles, inducing a current in a fixed coil on one point in their circle. Retrieved from Wikipedia CC BY-SA 3.0 The particles travel through the gradient until they reach the point in the gradient at which their density matches that of the surrounding sucrose. Retrieved from Wikipedia CC BY-SA 3.0 Higher energy particles travel a shorter distance in each orbit than they would in a classical cyclotron, thus remaining in phase with the accelerating field. Retrieved from Wikipedia CC BY-SA 3.0 Rain can transfer radioactive particles from the air to the ground - so when it began to spit yesterday afternoon we retreated to the car. Times, Sunday Times Anything that acts a physical barrier to radioactive particles also helps. Times, Sunday Times Environmentalists said that even small doses of radioactive particles could be harmful. Times, Sunday Times Parts of the surrounding forest were drenched in radioactive isotopes such as strontium-90, meaning radioactive particles can be released in case of fire. Times,Sunday Times The reactor was vented in a similar move a week ago, but an official said yesterday that a new release would leak higher volumes of radioactive particles. Times, Sunday Times The worm lives inside a smooth tube of fine mud or sand particles held together with mucus. Retrieved from Wikipedia CC BY-SA 3.0 Sand filters are bulky, heavy, have some spill over of sand particles and require chemicals to enhance water quality. Retrieved from Wikipedia CC BY-SA 3.0 Telekinetic beings can take control of her sand particles. Retrieved from Wikipedia CC BY-SA 3.0 On its passage over the desert, it picks up fine dust and sand particles (between 0.5 and 10 micrometres). Retrieved from Wikipedia CC BY-SA 3.0 This small particle size means that mud particles tend to stick together, whereas sand particles do not. Retrieved from Wikipedia CC BY-SA 3.0 Not only did this create small particle pollution, it also played a part in creating ozone pollution. Times, Sunday Times In particular, recent studies have shown for the first time that small particle pollution can cause cardiovascular problems, as well as lung and respiratory diseases. canada.com The small particle size of the rare earth metals provide optical feedback. Retrieved from Wikipedia CC BY-SA 3.0 This small particle size means that mud particles tend to stick together, whereas sand particles do not. Retrieved from Wikipedia CC BY-SA 3.0 A line defect that, while moving through the matrix, will be forced against a small particle or precipitate of the material. Retrieved from Wikipedia CC BY-SA 3.0 Once you add smoke particles, health-threatening smogs can form. Times, Sunday Times If it rains, soil and smoke particles mingle with the water, and mud falls from the sky, as it did on our house. Times,Sunday Times Bonfires are often linked to foggy nights and calm weather, as the smoke particles aid the formation of smog. Times, Sunday Times Smoke particles from bonfires and fireworks are hygroscopic - they attract water from the atmosphere - which encourages fog to form in less polluted air. Times, Sunday Times The fine smoke particles contained 64 compounds, two highly toxic. The Sun The charged solar particles flow down these ropes, providing the energy for the geomagnetic storms and the auroras. Times, Sunday Times They suggested that these sounds come from the solar particles associated with creating the aurora. Retrieved from Wikipedia CC BY-SA 3.0 A sudden and intense increase of solar particles eliminated the atmospheric and hydrological protection, causing the atmosphere to thin and water to retreat from the surface. Retrieved from Wikipedia CC BY-SA 3.0 Twentieth-century physicists used the word tachyon to describe a hypothetical subatomic particle that moved faster than light, but this was theoretical not real. Times, Sunday Times So, what did the subatomic particle say to the duck? Times, Sunday Times This was needed to detect changes of less than the diameter of a subatomic particle and was crucial to the eventual success of the project. Times, Sunday Times They suggest that when stars collapse the extreme gravity rips apart the fabric of space and generate a new subatomic particle. Times, Sunday Times After all, exchanges about quantum mechanics and subatomic particle physics do not the stuff of contemporary theatre typically make. Globe and Mail In nine months, each tiny particle can grow to a plant more than a foot high, with stems thicker than a thumb. The Sun He added a final paragraph setting out how his theory predicted the existence of an entirely new type of tiny particle called scalar and vector bosons. Times, Sunday Times After much experimentation, a tiny particle of dust was animated and the computer distributed that image throughout the entire shelf. Retrieved from Wikipedia CC BY-SA 3.0 But even there tiny particles of dust and grit will soon accumulate on the paintwork and become scratches as you brush by it. Times, Sunday Times The tiny particles slip into the bloodstream, causing increased viscosity. Retrieved from Wikipedia CC BY-SA 3.0 High-speed dental drills can send saliva and viral particles into the air where they can be suspended for hours on end. Times,Sunday Times It follows warnings that viral particles are too small to be trapped by the filters in most airconditioning systems. Times,Sunday Times Laboratory tests have shown that infected cells seems to produce viral particles faster. Times,Sunday Times And try not to cry because tears or droplets from a runny nose might mingle with viral particles. Times,Sunday Times Yet viral particles are hardy enough to remain active for a while outside of the host, with some staying infectious for hours, days or weeks. Retrieved from Wikipedia CC BY-SA 3.0 Meanwhile, the new on-the-spot tests analyse nose swabs and can magnify any active virus particle. The Sun The virus particle, (virion) consists of an outer lipid envelope and an icosahedral nucleocapsid core composed of protein. Retrieved from Wikipedia CC BY-SA 3.0 The virus particle has surface spikes proteins that are club-shaped and are evenly dispersed over the surface. Retrieved from Wikipedia CC BY-SA 3.0 The late genes are expressed after the genome has been replicated and encode the structural proteins to make the virus particle. Retrieved from Wikipedia CC BY-SA 3.0 These genes encode structural proteins that form the virus particle, or non-structural proteins, that are only found in cells infected by the virus. Retrieved from Wikipedia CC BY-SA 3.0 Translations: Chinese: 微粒 Japanese: 小さな粒 |
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