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Another major effect of topography is seen (or observed) in lowland sites.

Naturally occurring infections caused by ... have been seen in cattle, rodents, ...

Very little wear is evident (or observed).

The above effects were noted after irradiation of about 107 r.

These absorption bands do not occur in the vapour phase.

Frog skin exhibits (or shows) a potential difference of 20-90 mV with the inside positive.

An interesting situation obtains in connection with an externally heated cathode.

These sources are not found in rich clusters of galaxies.

High-output cardiac failure can occur, but is only seen infrequently (мед.). More than simple bonding between amino acids was evidenced in these reactions.

Also present in the spectrum were lines not familiar to me.

Источник: Русско-английский научно-технический словарь на Gufo.me