x-ray analysis 基本例句 爱克斯光分析 A method has been developed for the determination of lignin distribution in wheat straw cell walls by scanning electron microscopy coupled with energy dispersive X-ray analysis SEM- EDXA technique. 建立了一种用带有能谱仪的扫描电子显微镜 SEM- EDXA测定麦草细胞壁木素分布的方法。 iciba