The moterial plasticity and tenacity of steel material are good, have even quality, component is borne power lood is good, therefore design accords with mechanics assumption, safety is relioble.
英
美
释义
钢材材料塑性韧性好,质量均匀,构件承受动力荷载好,因此设计符合力学假定,安全可靠;
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