查询词典 ultrasonic

The application of ultrasonic method in bored concrete pile detection;2. Suo′s method and ultrasonic method for extracting BPBenzo(aPyrene content from coke oven gas were introduced.

阐述了对焦炉煤气中苯并芘含量提取处理方法中的索氏法和超声法的两种方法，分析了两种方法测定相同含浓度苯并芘含量样品测试数据差异及产生原因，用实验数据分析说明了使用超声法作为测定焦炉煤气中苯并芘含量是一种最佳的处理方法。

Ultrasonic Cleaner is mainly used to clean the solid material surface or disperse powder, in order to well-distribute powder in liquid and to watch on electron microscope conveniently. The source of ultrasonic wave adopt stir up-like or the autoexcitation type to work, computer control.

超声波清洗器主要用于清洗固体材料的表面，也可用于超声分散粉末类样品，使粉末颗粒均匀分散在液体中，以便在电镜上观察。

The results were as follows:ethanol volume fraction 70%,solid liquid ratio 1∶10,extraction time 10 min,temperature 50℃,ultrasonic power(160 W). Capsella bursa-pastoris ; alkaloids ; ultrasonic ; extraction

近年来，人们用超声波技术提取植物中的生物碱、黄酮、多糖、皂甙、蒽醌、香豆素等生物活性物质[3，4]，结果都表明超声波提取比常规提取法费时少

An efficient central ellipse algorithm for estimating the echo peak positions of ultrasonic sampling was presented to find the accurate receive time of echo by searching the peak of energy bursts, which is base on the theories of energy centrobaric correction method and least square method in the ultrasonic ranging system.

基于能量重心校正法和最小二乘法的原理，提出了一种改进型椭圆中心超声回波寻峰算法：通过曲线拟合搜索椭圆中心点，即回波信号能量集中点，进而找到回波信号的峰值点。

Results indicate that the optimum extraction conditions are as follows: ultrasonic power is 600W, temperature is 53℃, the ratio of liquid to solid is 8︰1, ultrasonic treating time is 70min, reflux extraction time is 120min, the extraction rate of oleanolic acid is 3.000 mg/g; XDA-1 resin is favorable in purification of OA in Chaenomeles sinensis Koehne, the optimum purification conditions are found to be 0.794 mg/mL of OA concentration, the flow rate of adsorption is 0.5 mL/min; the desorption solvent is 90% ethanol, and the flow rate of elutant is 1.0 mL/min.

结果表明，超声波辅助提取最佳工艺条件为：超声功率600 W、提取温度53℃、液料比8：1、超声波提取70 min，回流提取120 min，齐墩果酸得率为3.000 mg/g；XDA-1型大孔树脂对齐墩果酸具有较好的吸附和解吸效果，最佳纯化工艺条件为上柱液浓度0.794 mg/mL，吸附流速0.5 mL/min；以90%浓度乙醇洗脱，洗脱流速1.0 mL/min，纯化后得提取物中齐墩果酸纯度可达26.55%。

Based on the principle of chordal path multi-path ultrasonic flowmeter, the model of multi-path ultrasonic gas flowmeter that can adaptively adjust its weight coefficients was built using the methods of Gauss-Legendre integration and linear neural network.

在以弦向声道布置的多声道超声气体流量计原理的基础上，采用Gauss-Legendre数值积分和线性神经网络相结合的方法完成自适应调整权系数的多声道超声气体流量计建模。

ObjectiveTo observe and analyze the ultrasonic image change of the clonorchiasis, so that enhance the understanding of the disease's ultrasonic performance.

目的观察分析华枝睾吸虫病的声像图改变，以提高对本病超声表现的认识。

Methods Percutaneous nephrolithotomy guide by ultrasonic wave.Results The patients who have stone in their kidney and up ureter.We use PNL guide by ultrasonic wave,the effect is good,especially both side of kidney stone,deerhorn stone,loney kidney stone and relapse stone after operation.

结果 我院对肾、输尿管上段结石施行B超引导经皮肾镜取石术，效果满意，尤其对双侧肾结石、鹿角状结石、孤立肾结石及手术后复发肾结石等各复杂肾结石患者，效果良好。

In the study of extraction of antimicrobial substance from Eleocharis tuberose peel with ultrasonic, on the basis of single factors test and orthogonal test, the optimal technological parameters were material 60 mesh, ethanol 65%,1:10 for ratio of material to liquid, 45min for ultrasonic time, extraction for one time.

超声波法提取荸荠皮中抑菌物质的实验中，通过单因素及正交实验确定的最佳工艺条件为：采用60目的荸荠皮粉碎物、浓度65％的乙醇溶液、料液比1∶10、超声波作用45min、提取次数一次，在此条件下提取物对大肠杆菌和金黄色葡萄球菌的抑菌圈直径分别为13.3mm和14.3mm。

Main factors to bring ultrasonic level measurement error were studied and emendable error model of ultrasonic level measurement instrument was established according to the error characteristics in the process of measuring.

本论文运用化学计量学中的回归分析法、最优化方法、模式识别方法和计算机技术，对原油生产集输过程的实时盘库系统（目前国内尚未解决的难题）和气相色谱分析进行研究，完成了以下研究工作。

Dr. John Terrell: Just to comment a little bit on that.

我附带提一下，当我回到新几内亚做研究时，其中一项主要的研究会是民族植物学。

Used of persons only; having great physical beauty.

只用于人；身体上很美。