诊断效率(efficiency of　diagnosis)

1、诊断特异性(specificity of diagnosis)

诊断特异性(specificity of diagnosis)

2、生物培养诊断法 diagnosis method of biological

生物培养诊断法 diagnosis method of biological incubation

3、经济效率（Economic efficiency）

经济效率（Economic efficiency）

4、The mechanical efficiency of an engine

The mechanical efficiency of an engine is always less than 100% （） losses occurring in the form friction.AbecauseBsinceCdue toDowing to

5、植株化学诊断法 diagnosis method of plant chem

植株化学诊断法 diagnosis method of plant chemistry

6、The mechanical efficiency of an engine

The mechanical efficiency of an engine （） because losses occur in the form of friction.Ais always less than 100%Bis always more than 100%Cis always equal to 90%Dis always less than 90%