Purpose: To compare the value between bone image of dual energy subtraction (DE) with direct digital radiography and bone scintigraphy in diagnosing rib lesion.
目的：比较能量减影（DE）骨组织像与核素骨显像对肿瘤患者肋骨病变的诊断价值。
The structure and principle of the diagnosing device for turbine governing system are briefly described, such as systematic excitation, signal DE...
文中概要地介绍了调速系统性能诊断装置的系统激励、信号检测、参数辨识等硬软件结构与原理。
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