The evaluation showed that the high temperature stability, low temperature cracking resistance, aging resistance and temperature susceptibility meet the requirements of high grade road asphalt.
路用性能评价表明，沥青的高温稳定性、低温抗裂性、抗老化性和感温性等性能完全满足铺筑高等级公路的要求。 该产品正应用于国内高速公路的建设。
Purpose: to investigate the value of susceptibility-weighted imaging (SWI) in evaluating the histopathologic grade of cerebral astrocytomas.
目的：探讨磁敏感成像(SWI)在脑星形细胞瘤分级中的价值。
Objective To evaluate the value of dynamic susceptibility-contrast MR perfusion imaging in the per-operative differential diagnosis between single brain metastasis and high grade gliomas.
目的探讨MR灌注成像在鉴别单发脑转移瘤与高级别胶质瘤中的作用及价值。
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