设计师能选择更硬更耐腐蚀的钢板-有些部位能使用最高至550 BHN的钢板并且仍具有较好的抗冲击性能。
Harder and more abrasive resistant steels are available to the designers - up to 550 BHN can be applied in certain regions, and still with acceptable impact properties.
结果表明：对于碳含量有差异的钢板，其显微组织、晶粒度及夹杂物等级均属正常，焊缝中未发现淬硬组织；
The obtained results indicate that the microstructure, grain-size and inclusion level of said steel plates were normal, hardened structure induced from quench had not been found;
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