Bulgarian-English translations for обсег

• coverage
  Dont go to lunch if we dont have enough coverage for the help-desk phones.
  Before laying sod on that clay, the ground needs two inches of coverage with topsoil.
  The enemy fire is increasing – can we get some immediate coverage from those bunkers?
• domain
  The king ruled his domain harshly.
  Dealing with complaints isnt really my domain: get in touch with customer services.
  His domain is English history.
• range
  We sell a wide range of cars
  We could see the ship at a range of five miles
  One can use the speed of sound to estimate the range of a lightning flash