ABBREVIATION for philosophy, politics, and economics: a university course 政治、经济与哲学(大学的一门课程)
The diagnostic rate of combined use of CEA, CA153 and pleural biopsy in malignant PE was superior to that of CEAplus CA153 (91.4% vs 71.4%, P<0.05).
当CEA、CA153检测联合胸膜活检时，其阳性诊断率为91．4％，明显高于CEA结合CA153检测的阳性诊断率（71．4％）（P〈0．05）。
Objective: To evaluate the clinical capability of ventilation-perfusion (V-P) scintigraphy and spiral ct angiography (SCTA) in the diagnosis of pulmonary embolism (PE).
目的：比较通气蛐灌注(V - P)显像和螺旋ct血管成像(SCTA)对肺栓塞(PE)诊断的临床价值。
PE was significantly and positively related to P use efficiency, not related to P absorption. The provenances with higher PE had greater dry matter accumulation.
低磷水平下马尾松种源磷效率与磷素利用效率有关，而与磷素吸收效率相关性较小，磷效率和磷素利用效率高的种源其干物质积累量较高。
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