Methods Using CT performance phantom, dose phantom and X-ray dose survey meter to test all specifications of CT performance that were demanded by the state regulations.
方法使用性能检测模型、剂量模型、剂量仪，按照卫生部规范对CT性能指标逐项检测分析。
2
The microcosmic configuration, phase distributions and constituents are investigated by X-ray diffract meter.
采用X射线衍射相结构分析对膜层的微观形貌和膜层进行了分析。
3
PAN fibers with different drawing ratio and different preoxidation degree were investigated by means of sound velocimeter and X-ray diffraction meter.