TỪ VỰNG TOEIC unit 27
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TỪ VỰNG TOEIC unit 27
Unit 27NANO SUPER DE NUL'NVLL ARM SUR.G STRAT LATER TQMIAIR Quiz 27-1 Quiz 27-2 Quiz 27-3 Quiz 27-4 Quiz 27-5 Review Quizzes 27NANO comes from (he Gre TỪ VỰNG TOEIC unit 27 eek nanos, meaning “dwarf.” For a prefix meaning “small,” English got by for centuries with the Greek micro-, and later mini-came to be used widely as well. But only recently, as a result of advances in scientific knowledge and technology, has there been a need for a prefix meaning “extremely small” TỪ VỰNG TOEIC unit 27 —a need that's been filled by nano-, which today is being attached to all kinds of words, sometimes not very seriously (nanoskirt, nano-brained, etc.)TỪ VỰNG TOEIC unit 27
.nanotechnology /.na_nõ_tek_'nảJeJẽ/ The science of manipulating materials on an atomic or molecular scale, especially to build microscopic devices suUnit 27NANO SUPER DE NUL'NVLL ARM SUR.G STRAT LATER TQMIAIR Quiz 27-1 Quiz 27-2 Quiz 27-3 Quiz 27-4 Quiz 27-5 Review Quizzes 27NANO comes from (he Gre TỪ VỰNG TOEIC unit 27 ong but lightweight materials for auto bodies.Nanotechnology, or nanotech for short, deals with matter at a level that most of us find hard to imagine, since it involves objects with dimensions of 100 billionths of a meter (l/800th of the thickness of a human hair) or less. The chemical and physical TỪ VỰNG TOEIC unit 27 properties of materials often change greatly at this scale. Nanotechnology is already being used in automobile tires, land-mine detectors, and computTỪ VỰNG TOEIC unit 27
er disk drives. Nanomedicine is a particularly exciting field: Imagine particles the size of a blood cell that could be released into the bloodstream Unit 27NANO SUPER DE NUL'NVLL ARM SUR.G STRAT LATER TQMIAIR Quiz 27-1 Quiz 27-2 Quiz 27-3 Quiz 27-4 Quiz 27-5 Review Quizzes 27NANO comes from (he Gre TỪ VỰNG TOEIC unit 27 cells.nanosecond '"na_ne_,se-kend/ One billionth of a second.• When he finally asked if she would marry him, it look her about a nanosecond to say yes.rhe nonserious use of nanosecond is probably much more common than the proper technical use. In measurement terms such as nanosecond, nanogram, and n TỪ VỰNG TOEIC unit 27 anometer, nano- means “billionth”; in other kinds of words, its meaning isn't quite so precise. In computers, the speed of reading and writing to randTỪ VỰNG TOEIC unit 27
om access memory7 (RAM) is measured in nanoseconds. By comparison, the speed of reading or writing to a hard drive or a CD-ROM player, or for informatUnit 27NANO SUPER DE NUL'NVLL ARM SUR.G STRAT LATER TQMIAIR Quiz 27-1 Quiz 27-2 Quiz 27-3 Quiz 27-4 Quiz 27-5 Review Quizzes 27NANO comes from (he Gre TỪ VỰNG TOEIC unit 27 e /,na_na..strak_ch0r/ An arrangement, structure, or part of something of molecular dimensions.• In the 1990s the physics department, which had been doing extensive research on microstructures, began to get deeply involved in nanostructures, including nanofoam, nanoflakes, and nanofibers.Two importa TỪ VỰNG TOEIC unit 27 nt types of nanostructure are nanocrystals (tiny crystals, often of semiconducting material) and nanotubes (tiny tubes, usually of pure carbon). NanocTỪ VỰNG TOEIC unit 27
rystals made from semiconductors change color depending on their size, and are being used for such tasks as detecting viruses in living cells. NanotubUnit 27NANO SUPER DE NUL'NVLL ARM SUR.G STRAT LATER TQMIAIR Quiz 27-1 Quiz 27-2 Quiz 27-3 Quiz 27-4 Quiz 27-5 Review Quizzes 27NANO comes from (he Gre TỪ VỰNG TOEIC unit 27 rolled, folded, or cut while still producing power. Nanotubes are also now being used in materials for lightweight tennis rackets and golf clubs, and may soon enable the manufacture of TV screens no thicker than a film.nanoparticle /‘na.n8_.Pár_ti_kal/ A tiny particle whose size is measured in bill TỪ VỰNG TOEIC unit 27 ionths of a meter.• Nanoparticles of iron are being used to clean up soil pollution, helping break down molecules of dangerous substances into simpleTỪ VỰNG TOEIC unit 27
compounds.Nanoparticles of a material usually have very different qualities from those that the material has at its ordinary scale, which is one reasoUnit 27NANO SUPER DE NUL'NVLL ARM SUR.G STRAT LATER TQMIAIR Quiz 27-1 Quiz 27-2 Quiz 27-3 Quiz 27-4 Quiz 27-5 Review Quizzes 27NANO comes from (he Gre TỪ VỰNG TOEIC unit 27 um nanoparticles added to rocket fuel can make the fuel burn twice as fast and release much more energy. Silicon nanoparticles are increasing the energy efficiency of solar cells by allowing the energy from ultraviolet light to be captured for the first time. Other nanoparticles are now helping prev TỪ VỰNG TOEIC unit 27 ent rust in metals, produce stronger batteries, enhance the diagnosis of cancer, and improve the filtering of water, and the number of other applicatiTỪ VỰNG TOEIC unit 27
ons is growing fast.SUPER, a Latin prefix meaning “over, higher, more than,” has become one of the most familiar prefixes in English, one of those preUnit 27NANO SUPER DE NUL'NVLL ARM SUR.G STRAT LATER TQMIAIR Quiz 27-1 Quiz 27-2 Quiz 27-3 Quiz 27-4 Quiz 27-5 Review Quizzes 27NANO comes from (he Gre TỪ VỰNG TOEIC unit 27 s to have stalled in 1903 when the playwright G. B. Shaw translated the German word Ubermensch, Nietzsche's famous term for the person who rises to heroic heights through discipline and creative power, in the title of his play Man and Superman. The comic-book character with the same name wouldn't ma TỪ VỰNG TOEIC unit 27 ke his appearance for another 30 years.Unit 27NANO SUPER DE NUL'NVLL ARM SUR.G STRAT LATER TQMIAIR Quiz 27-1 Quiz 27-2 Quiz 27-3 Quiz 27-4 Quiz 27-5 Review Quizzes 27NANO comes from (he GreUnit 27NANO SUPER DE NUL'NVLL ARM SUR.G STRAT LATER TQMIAIR Quiz 27-1 Quiz 27-2 Quiz 27-3 Quiz 27-4 Quiz 27-5 Review Quizzes 27NANO comes from (he GreGọi ngay
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