Site and tree age are major factors of forming small dwarf tree on the Loess Plateau. 立地条件和树龄是影响黄土高原小老树形成的主要因素。
Smoking, drinking, overweight, obesity and age were major risk factors of COPD. 吸烟、饮酒、超重肥胖、年龄等是COPD的主要危险因素。
The two variables of age and major had notable influence on the possibility of using psychological guidance in the assumptive scene. 年龄和所学专业两个变量对假设情景下运用心理辅导可能性有显著影响。
In an industry economy age, major enterprises account for much of R & D investment; 在工业经济时代,大型企业是R&D投资的主体;
Conclusion Garden stage of femoral neck fractures and patients ' age are major risk factors contributed to the accidence of ANFH and late collapse of femoral head, which is very high in type III to IV of Garden stages and adolescent. 结论股骨颈骨折Garden分型和年龄是发生股骨头缺血性坏死和晚期塌陷的主要危险因素,GardenⅢ、Ⅳ型和青少年发病率高。