Clinical study of change s of plasma nitric oxide and tumor necrosis factor levels in patients with conge stive heart failure .
充血性心力衰竭患者血浆一氧化氮和肿瘤坏死因子含量变化及其意义。
Diagnosis of systemic venous anomaly in complicated conge nital heart disease with two dimensional and color dopplar ultrasound .
复杂先心病合并体静脉畸形的二维及彩色多普勒超声诊断。
Airspace capacity evaluation , which is the prerequisite and basis of the implementation of atfm air traffic flow management , lays the foundation for solving the problem of air traffic conge .