Results The coincidence of high-frequency ultrasound examination with tumor's physical character attained 100% and in differential diagnosis of benign or malignant tumors was 87.4%.
结果高频超声在肿块的物理性质诊断方面符合率达100%，在肿块良恶性鉴别诊断方面符合率为87.4%。
The noise from injection and bubbling has the character of wide frequency band and high noise level.
喷注与鼓泡产生的噪声具有频带宽、声压级较高的特征。
As a whole, the character of geological disasters in Liaoning province is high in frequency, widespread in distribution, much in type and large in destructive action.
归结起来，辽宁的地质灾害有分布面广、类型多、灾害频繁和破环性大等特点。
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