Online Google Dictionary

bitumen 中文解釋 wordnet sense Collocation Usage Collins Definition
Noun
/biˈt(y)o͞omən/,/bī-/,
Font size:

A black viscous mixture of hydrocarbons obtained naturally or as a residue from petroleum distillation. It is used for road surfacing and roofing,
  1. A black viscous mixture of hydrocarbons obtained naturally or as a residue from petroleum distillation. It is used for road surfacing and roofing

  1. any of various naturally occurring impure mixtures of hydrocarbons
  2. Bitumen is a mixture of organic liquids that are highly viscous, black, sticky, entirely soluble in carbon disulfide, and composed primarily of highly condensed polycyclic aromatic hydrocarbons.
  3. Mineral pitch; a black, tarry substance, burning with a bright flame; Jew’s pitch. It occurs as an abundant natural product in many places, as on the shores of the Dead and Caspian Seas. ...
  4. (Bitumens) An amorphous grouping of resinous and petroleum products: crude oil, amber, asphaltum, coal.
  5. Term commonly applied to various mixtures of naturally occurring solid or liquid hydrocarbons, excluding coal. These substances are described as bituminous. Asphalt is a bitumen. See Asphalt.
  6. hydro-carbon which hardens by the action of light. It was used by Joseph Nicephore Niepce to produce the worlds first photograph in the early 19th century.
  7. the generic term for an amorphous, semi-solid mixture of complex hydrocarbons derived from any organic source. Asphalt and coal tar are the two used in the roofing industry.
  8. (1) a class of amorphous, black or dark colored, (solid, semi-solid or viscous) cementitious substances, natural or manufactured, composed principally of high molecular weight hydrocarbons, soluble in carbon disulfide, and found in asphalts, tars, pitches and asphaltites; (2) a generic term used ...
  9. Can be used as an adhesive under pavers. Made from a combination of asphalts and neoprene.
  10. A virtually involatile, adhesive and waterproofing material obtained by refinery processes from crude petroleum, or present in natural asphalt deposits in some parts of the world. It is black or brown in colour and completely or nearly completely soluble in toluene. ...
  11. Black, sticky substance, related to asphalt. Used in sealants, mineral felts and damp-proof courses.
  12. also called asphalt or tar, bitumen is the brown or black viscous residue from the vacuum distillation of crude petroleum. It also occurs in nature as asphalt "lakes" and "tar sands." It consists of high molecular weight hydrocarbons and minor amounts of sulfur and nitrogen compounds.
  13. Bitumens are mixtures of hydrocarbons of natural or pyrogeneous origin; or combinations of both, frequently accompanied by their non metallic derivatives, which may be gaseous, liquid, or solid, and which are completely soluble in carbon disulfide. ...
  14. petroleum that exists in the semisolid or solid phase in natural deposits
  15. Means crude oil having a density greater than or equal to 1 000 kg/m³.
  16. Gooey, black, high-sulfur, heavy oil extracted from tar sand and then upgraded to synthetic fuel oil.  See tar sand.
  17. generally means hydrocarbons in a solid or semi-solid state. Principally the tar sands of Canada, defined by viscosity, from which synthetic oil is made.
  18. The heavier fractions of crude oil, which in Assyrian times were collected from springs, for instance at Itu'u PGP  on the Euphrates PGP , and used for waterproofing, adhesive, medical, and ritual TT  purposes.
  19. the residual fraction obtained from the fractional distillation of crude oil. It is the heaviest fraction and the one with the highest boiling point.
  20. The heaviest and thickest form of petroleum. It must be heated or diluted before it can flow. It can be processed into synthetic crude oil.
  21. A naturally occurring viscous mixture, mainly of hydrocarbons heavier than pentane, that may contain sulphur compounds and that, in its natural occurring viscous state, is not recoverable at a commercial rate through a well.
  22. The residual product of crude oil vacuum distillation. A black or dark brown solid or semi-solid organic compound that gradually softens and turns to liquid when heated.
  23. can mean either a paved (sealed) road or the black substance (usually asphalt) used to pave (seal) the road
  24. Bitumen is a a naturally occurring organic byproduct of decomposed organic mater. It is generally hard but can be made more viscous through the application of heat, and it can also be dissolved in petroleum distillates. ...
  25. Very heavy refined fractions used as the basis for the manufacture of road asphalt and roofing felt.