机械英语高手请进!这些句子是啥意思?
2Steelsproducedtofinegrainedpractice,i.e.—
(a)normalizedsteelwheretheactualMn%dividedbytheactualC%≥4;
(b)controlledrolled;
(c)thermo-mechanicallycontrolledrolled;or
(d)grainrefiningelementsadded,e.g.aluminiumortitanium(orboth)0.01%minimum.Examplesare
AS1548,Types5and7,andAS1594gradeHU300/1.