• The laser does not need to be very powerful.

• The coacervating agent need not be a micromolecular substance that can form hydrogen bonds.

• The reactant does not have to be a stereoisomer.

• It is not necessary that the X[sub]k[/sub] be independent.

• It is not necessary for these liquids to be totally immiscible.

см. тж. а ~; а ~ на; а также ~; далеко ~; или совсем ~

• The model fails to (or does not) explain many observations of this phenomenon.

• This optical processor fails to use all the parallelism which optics has to offer.

• No detailed study has been made of methods by which ...

• Many shapes other than round are formed by extrusion through dies of suitable contour.

• The particle managed to travel through the box without hitting another particle.

• The article neglects to consider some additional factors.