The results showed that TCP phase has not appeared in DD2 single crystal alloy after ageing.
结果表明，DD 2单晶合金时效后无任何有害相产生。
The results show that as-annealed microstructure and as-quenched-tempered microstructure of the low carbon high alloy steel added nickel are both single-phase lath martensite.
结果表明：加镍低碳高合金钢无论退火态还是淬火回火态，其组织均为单相板条马氏体；
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