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второстепенная балка stresses
construct.	joist; pony girder; secondary girder; trim joist; runner
mil., tech.	distributing girder
seism.	second beam; second girder
tech.	middle girder; secondary beam
второстепенные балки
oil	trimmers

второстепенная балка: 6 phrases in 4 subjects

Construction	3
Makarov	1
Military	1
Technology	1