differences method - district
- direct-current interpretation
- direct-current polarity
- direct-current resistivity method
- direct-current source
- direct-heat dryer
- direct-wave traveltime curve
- direct-wave traveltime graph
- directed blast
- directed bulk blast
- directed explosion
- direction
- direction angle
- direction arm
- direction gauge
- direction image
- direction meter
- direction method
- direction of current
- direction of dip
- direction of movement
- direction of stream
- direction of wave travel
- direction of waves
- directional blow
- directional coverage
- directional drilling
- directional explosion
- directional information
- directional log
- directional motion
- directional pressure
- directional ray
- directional scanning
- directional source
- directional survey
- directional survey tool
- directional surveys
- directional surveys elongation
- directional wave
- directionless pressure