• 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.

• Our compasses today depend upon the same forces.

• The teloblast lies deep and is out of focus.

• An out-of-focus photograph ...