Objective: To analyze the ultrasonic feature in different dialectical type of chronic pelvic inflammatory disease.

Based on the analyses of the working principle of flow measure and the comparison to the property of mechanical water meter,the technical property and function of a new type of ultrasonic wave water meter and its energy-saving effect in the calculating process were introduced.

Ultrasonography of benign tumors in epididymis;

Conclusion Ultrasonography at early stage has great value in diagnosis of cornual pregnancy and interstitial tubal pregnancy,which can provide valuable diagnostic information for clinicians.

Comparison of body surface ultrasonography and endoscopic ultrasonography in preoperative staging of gastric cancer