____<br/>is the isothermal heat treatment by which austenite transforms to<br/>bainite. A: Isothermal<br/>annealing B: Quenching C: Austempering D: Marquenching
____<br/>is the isothermal heat treatment by which austenite transforms to<br/>bainite. A: Isothermal<br/>annealing B: Quenching C: Austempering D: Marquenching
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