Русско-английский научно-технический словарь
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• Populations fluctuate in size.
• The temperature fluctuates.
• The pointer oscillates with respect to the centre of the scale.
• The atoms oscillate (or vibrate).
• The prices vary (or fluctuate).
• The conveyor vibrates.
• In the steady state, c oscillates (or fluctuates, or varies) between upper and lower limiting values.
• The controlled variable will oscillate forever about the desired steady-state value.