Study on Ethanol Extracting Conditions of Taxol from Leaves of Taxus Chinese var. maria Influence of Medicinal Plant Extracts on the Inhibition Activity of Embellisia astragli and the Seed Germination of Astragalus adsurgens Extraction and identification of volatile compounds of three kinds of chinese date by gas chromatography-mass spectrometry (GC-MS) Optimization of ethanol extraction process of Psoraleae Fructus-Myristicae Semen drug pair by orthogonal test combined with fingerprint