один или несколько
• A hardener is an alloy containing a high percentage of one or more alloying elements which ...
• Small caissons are used singly or in groups to carry such loads as ...
Русско-английский научно-технический словарь• A hardener is an alloy containing a high percentage of one or more alloying elements which ...
• Small caissons are used singly or in groups to carry such loads as ...
Русско-английский научно-технический словарь