Relationship between abnormal fetal heart rate tracing patterns during the second steage of labor and perinatal outcome;
第二产程异常胎心监护图形与新生儿结局的关系
On the relations between the second industry and the tertiary industry on a new road to industrialization;
新型工业化进程中第二产业与第三产业的关系论析
Shanghai 2010 World Expo ——Impact on Shanghai s second industry;
2010年世博会对上海第二产业的带动作用
The results show that the strength and fracture toughness of the two kinds of composites are increased by the addition of the second phases, WC and ZrO2.
结果表明:第二相WC、ZrO_2弥散分布于Al_2O_3中可明显改善复合材料的强韧性;Al_2O_3-WC-ZrO_2和Al_2O_3-WC陶瓷材料的强度分别为820MPa和510MPa,韧性分别为8。