two-boiler
two-box
two-burn
two-can
two-car
two-carrier
two-cell
two-centered
two-channel
two-circuit
  two-circulation
two-coat
two-coil
two-color
two-column
two-compartment
two-component
two-cone
two-cord
two-course
two-cup

    two-circulation well control method

    способ глушения скважины с разделёнными удалением пластового флюида и сменой бурового раствора