So cascading several weak mechanisms does not provide the safety of a single stronger mechanism.

What remains is a single, multipurpose mechanism used to generate the same rich array of sentences that transformations did.

At the front roof-line was another, propped high, the props held by a single mechanism.

According to single-store theories, a single mechanism is responsible for serial position effects.

Another trial involved two drugs used in combination, each blocking a single mechanism.

Recent evidence supports both mechanisms, and also the possibility that both are part of a single mechanism.

There is no known definitive single mechanism that causes colpocephaly.

But the biggest single mechanism, scientists believe, is the ballast water from ships.

Now, however, an elegant theory has been proposed that neatly combines both conflicting ideas into a single mechanism.

He hoped to find a single mechanism that made cells age, despite the theorists' prediction of many ailments.