Định nghĩa của từ Allen screw™
Allen screw™noun
Vít lục giác™
/ˈælən skruː//ˈælən skruː/Word Origin1930s: from the name of the manufacturer, the Allen Manufacturing Company, of Hartford, Connecticut.
namespace
Vít lục giác™
/ˈælən skruː//ˈælən skruː/Word Origin1930s: from the name of the manufacturer, the Allen Manufacturing Company, of Hartford, Connecticut.