снижение
см. тж. понижение
• A drop in pH ...
• The increase in sensitivity is not accompanied by reduced detection limits.
• If helium atoms are slowed down by lowering the temperature, ...
• The fall (or decline, or reduction) in (or of) resistivity ...
• A decline in productivity ...
• A drop in production ...
Источник:
Русско-английский научно-технический словарь
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