прочно
• The core support is mounted firmly on the tank floor.
• The controller is robustly (or ruggedly) constructed.
• The races are held securely in place.
• The centrepieces securely hold the top and bottom jaw sections.
• Strongly constructed buildings ...
• A hobbing press is more sturdily built than ordinary presses.
Источник:
Русско-английский научно-технический словарь
на Gufo.me
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