Русско-английский научно-технический словарь
эффективный
см. тж. высокоэффективный; давать хорошие результаты; целесообразный
• Profitable operation of high-speed machine-tools ...
• Hydrogen is attractive as a fuel.
• This practice is more appropriate than changing the course of rivers.
• Before adequate methods had been developed, ...
• This theory does not always work.