• The technique eliminates the need to design ...
• The development of the high-speed wind tunnel obviated the need for these techniques.
• The method obviates the necessity for ( or dispenses with ) a second light source.
• The new material will save costly grinding and finishing.
• This makes shaft lining unnecessary in hard massive rocks.
• The float process does away with the polishing operations.
• Thus the need to store substantial quantities of spares will be avoided .
• This eliminates the necessity for manual adjustments.
• The new device eliminates the need for ( or of ) the coupling capacitor.
• They have done away with the need for lenses.
• This approximation dispenses with the need for complex computer calculations.