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 density ['dɛnsətɪ]   添加此单词到默认生词本
n. 密度

[化] 密度

[医] 密度, 致密度


  1. The density of population in this city is very high.
    这个城市的人口密度非常高。
  2. The density of water is 1.
    水的密度是1。
  3. One material can be distinguished from another by their physical properties: color, density, specific, heat and so on.
    一种材料与另一种材料的区别在于他们的物理性能：颜色、密度和比热等等。


density
[ noun ]
  1. the amount per unit size

    2. <noun.attribute>
  2. the spatial property of being crowded together

    3. <noun.attribute>


Density \Den"si*ty\ (d[e^]n"s[i^]*t[y^]), n. [L. densitas; cf.
F. densit['e].]
1. The quality of being dense, close, or thick; compactness;
-- opposed to {rarity}.

2. (Physics) The ratio of mass, or quantity of matter, to
bulk or volume, esp. as compared with the mass and volume
of a portion of some substance used as a standard.

Note: For gases the standard substance is hydrogen, at a
temperature of 0[deg] Centigrade and a pressure of 760
millimeters. For liquids and solids the standard is
water at a temperature of 4[deg] Centigrade. The
density of solids and liquids is usually called
specific gravity, and the same is true of gases when
referred to air as a standard.

3. (Photog.) Depth of shade. --Abney.

  1. Those factors include repair costs, health costs and population density.
  2. But for all the activity, winery owners are aware that central Washington will never rival the Napa Valley, located near San Francisco, primarily because the population density is just not there, Hogue says.
  3. Its density is on par with that of Arabian Light.
  4. Most of the kiddie-food commercials "promote high-caloric density foods that may contribute to the energy imbalance that results in obesity," the academy charges.
  5. In Abidjan's high density suburb of Yopougon, for example, they said thugs drove three cars into a crowd of their followers on Saturday, injuring several.
  6. Osteoporosis results in a loss of bone density and can lead to bone fractures and spinal problems like dowager's hump.
  7. This disorder is caused by an abnormal gene that prevents the liver from processing low density lipoprotein cholesterol, the so-called bad cholesterol.
  8. Obviously, it makes no sense to build subways in areas with low population density and little prospect of high ridership.
  9. For example the power density of the core is reduced and the reactor is larger than earlier designs with the same output.
  10. The industry claims that roughly 90% of all plastic bottles are either a one (for polyethylene terephlate, or PETE) or a two (for high density polyethylene, or HDPE).
  11. The insulator protects the thermocouples from chemical attack, while its density and thermal conductivity allow the same response times as a bare wire of the same diameter. Cableries de Lens: France, tel 3327671111; fax 3327686077.
  12. But for most important applications of superconductivity, he adds, "you can't get too far away from the need for higher critical current density."
  13. The city now fines factories that exceed limits on the density of the garbage they discharge, although it does not regulate the amount of sewage released.
  14. Lovely pure stuff with great nerve and density.
  15. In the research, doctors measured changes in two main components of cholesterol _ high density lipoprotein, or HDL, and low density lipoprotein, or LDL _ as women reached the change of life.
  16. In the research, doctors measured changes in two main components of cholesterol _ high density lipoprotein, or HDL, and low density lipoprotein, or LDL _ as women reached the change of life.
  17. Increased volumes and sharply improved prices - in the case of high density polyethylene up 65 per cent year on year - helped drive earnings sharply upwards.
  18. Increasing population density: cities are becoming larger and, on average, richer.
  19. Despite 900-degree Fahrenheit surface temperatures created by a runaway "greenhouse effect," Venus is the planet most like Earth in terms of size, mass, density and distance from the sun.
  20. The DoE has indicated it will encourage higher-density developments at or near public transport facilities. Until now, many London authorities have adopted lower density standards - as low as 70 habitable rooms per acre (hra).
  21. Bulgaria's responsibility for developing an electronics industry under the former Comecon division of labour helps explain why the country ranks first in telephone density among the former socialist countries, with 34 lines per 100 population.
  22. The preliminary results show substantial improvements in bone density in the forearm of the twin receiving the supplement.
  23. It can't do both, given density of population" and meet air-quality standards.
  24. The space around the drums will then be filled with a high density cement grout mixed by Wimpey Geotech on board the recovery vessel and pumped into place using specialist equipment and services.
  25. "The bailiff gave the jury four unnegotiated tickets which in that state had a negligible value," the judge wrote in a decision that had the density if not the weight of an actual judicial ruling.
  26. Mr Rupert Fraser, finance director, said it could be used wherever there was sufficient density of poultry droppings. The fuel used at Eye represents the 'output' of 70m chickens.
  27. Some might argue that it is because of Hong Kong's heavy population density that the subway is able to turn a profit.
  28. Wood said good mineral density was important, especially for women, because it helped prevent problems like dowager's hump or osteoporosis.
  29. She found that men with high testosterone also have higher levels of high density lipoprotein, or HDL, the so-called good cholesterol that protects people from heart attacks.
  30. There would also be increased charges to patients for hospital care and prescriptions. Mr Seehofer said Germany had the second highest density of doctors per capita in Europe.
density
density airspeed
density altitude
density anomaly
density arm
density balance
density bombing
density bottle
density bullet
density by volume
density change method
density channel
density class
density coefficient
density component
density contour
density contrast
density control
density control (控...
density control device
density control valve
density controller
density correction
density current
density current in es...
density curve
density cycle
density data
density decrease
density dependence
density dependent gro...
density determination...
density distribution
density distribution ...
density drop
density effect
density eggs
density error
density evolution
density factors for g...
density flow
density fluctuation
density fluctuations
density fluids
density fog
density fonction
density fractionating
density fractionation
density function
density functional th...
density ga(u)ge
density gage
density gauge
density gradient
density gradient cent...
density gradient column
density gradient elec...
density grading
density imbalance
density impulse
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