см. тж. всё время; всегда; ежедневно; неизменно; непрерывно; неуклонно расти

• The surface of Venus is perpetually (or constantly) hidden by clouds.

• Such devices will be routinely available.

• One problem arose repeatedly in any attempt to calculate ...

• Erosion, transportation and deposition persistently carry mineral matter from higher places on the continents to ...

• The forces are changing constantly.

• Later researchers have consistently reported that no such change could be detected.

• Special storage places should be provided in which the temperature can be held below 60°F at all times.

• The entire sensitive portion of the bulb must be immersed at all times in the medium being measured.

• What lies behind the Sun's ever changing visible features?

• The need for this product will grow steadily.

[com]USAGE: [lang id=2]~ (величина)[/lang][/com]

• "S" is (a) constant here.

I

• A structural member of uniform cross-section ...

II

см. тж. неизменный; оставаться неизменным; поддерживать постоянное напряжение

• The pressure and temperature have been presumed to be fixed.

• The composition is fixed and the two variables are temperature and pressure.

• A steady difference of potential exists across ...

III

• This assures complete control of rods and caps at all times.

• In areas of sustained shortage of water ...