betulaefolia
美
英 
例句
The volatile oil from the fruits of Pyrus betulaefolia Bunge was abstracted by steam-stilling and analyzed by GC-MS method.
采用水蒸氣蒸餾法從杜梨果實中提取揮發油,用氣相色譜-質譜對化學成分進行鑒定。
Preliminary study of the fruiting features and maturing condition of Pyrus betulaefolia
棠梨果實特性和成熟情況初步研究
Study on the Extraction Methods and Content Measurement of Polysaccharide from Pyrus betulaefolia Bunge Fruit
杜梨果實多糖提取方法及含量測定的研究
Chemical Components in Volatile Oils from the Flowers of Pyrus betulaefolia Bunge
杜梨花揮發油化學成分的研究