recovery of coal - remotely sensed data
- relative determinations
- relative displacement
- relative error
- relative evaporation
- relative extension
- relative fall
- relative fall of sea level
- relative force of gravity
- relative gas content
- relative gravimeter
- relative height
- relative measurements
- relative methane-bearing capacity
- relative movement
- relative permeability curve
- relative permeability curves
- relative reading instrument
- relative relief
- relative rise of sea level
- relative seismicity
- relative times of occurences
- relative velocity
- relativistic
- relativistically
- relaxation
- relay box
- relay motor
- relay pump
- releasable
- release
- release fracture
- release of pressure
- release valve
- released energy
- released mineral
- releasing
- relevant to
- releveling
- reliable observation
- reliably correlative horizon