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211. Ultrasonic transducer takes charge of the transformation between sonic and electricity energy, and plays a significant role in the acoustic system.

212. ObjectiveTo optimize the extraction process of polysaccharide from D. fimbriatum Hook. var. oculatum Hook by ultrasonic hot reflux assisted.

213. Purpose : Investigate and discuss the value of the ultrasonic diagnosis on acute appendicitis.

214. The ultrasonic technics was applied to anode oxidation of aluminum. The influences of ultrasonic on anode oxidation curves, electrolytic process parameters and oxide film's morphology were studied.

214. Sentencedict.com try its best to collect and create good sentences.

215. In this study, different solvents were used to extract vanillin from vanilla bean by ultrasonic. The extraction was separated by SPE, and analysed by GC-MS.

216. Ultrasonic cardiogram ( UCG ) is helpful to establish diagnosis.

217. Objective To determine the calcaneum bone density of pregnant women's in meta late-phase with ultrasonic bone density apparatus.

218. A new approach of digital scan converter for medical ultrasonic imaging system is proposed.

219. Objective To winnow and establish the optimal condition for ultrasonic extraction of total flavone from christina loosestrife herb.

220. With a model for the ultrasonic signal, the requirement on receiver and transmitter performance and the detection accuracy of the bearings of an ultrasonic borehole televiewer are discussed.

221. Tool electrode ultrasonic vibration aided gas medium EDM technology was proposed and correspondingexperiment system was designed.

222. It was found that extracting time had evident effects on ultrasonic extracted Chinese Angelica ( Danggui ).

223. Result: Fever ( 100 % ) was the most common clinical manifestations, ultrasonic cardiogram ( UCG ) detected vegetation 25 cases.