In nondestructive evaluation technique, ultrasonic parameters related to certain material characteristics often exhibit properties of frequency dependence.
超声无损评价中，与材料特性相关的超声参数具有频率依从性。
These two types wear exhibit different appearance and have different evaluation criterions, it's necessary to divide these two types wear and give a respective detection.
这两种磨损具有不同的表现形式和评价标准。有必要对这两种磨损进行区分和分别检测。
Exhibit 3 is the prior assessment on the advertisement which is inconsistent with the post-fact assessment and the source of the evaluation bases should be ascertained;
证据3是对广告做的事前评估，而事前评估与事后评估不一致，评估报告依据的来源需要确定；
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