用x射线衍射法对棉纤维细胞壁的微原纤螺旋角和纤维素微晶相对取向指数在植株中的分布规律进行了研究。
The distribution of microfibril spiral angle and relative orientational index of cellulose crystallites in cotton fibre cell walls had been studied by X-ray diffraction analysis.
方法应用螺旋CT仿真支气管镜技术（CTVB）及纤维支气管镜（FOB）对30例较大气道病变的患者进行检查并分析比较两种方法的差异。
To compare the effectiveness and difference of CTVB and fiberoptic bronchoscopic (FOB)in the evaluation of the larger airway disease in 30 case patients.
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