The usagerate of antibiotics was 48. 81%. CONCLUSIONS The investigation method about prevalence rate is simple and reliable.
抗菌药物使用率为48.81%。结论 医院感染现患率调查方法简单，省时省力，结果可靠；
2
Thermal extrusion is a forming method with seldom or no machining, and has high usagerate of material (70%), easy operation and efficient.
热挤压是一种少或无机加工的成形方法，具有材料利用率高(70%)，操作简单，工作效率高等优点。
3
An index assessing the stage where an economy stays in an economic cycle, including the usagerate of the industrial production and equipment and the retail volume.