超声波

By using the silicomolybdic yellow colorimetric method, the paper determines not only the existing form of soluble glass in the newly made-up, being used, and discarded cooling liquid,but also the relation of the stability of cooling liquid to the concentration and standing time of monosilicic acid and total silicic acid. The relation of the concentration of polysil...

本文采用硅钼黄比色法测定新配制、使用中和报废冷却液中的水玻璃存在形态和研究冷却液的稳定性与单正硅酸、总硅酸的浓度和放置时间的相关性；用四氢呋哺萃取比色法测定冷却液中的高聚硅酸含量与放置时间的相关性；研究用超声波、磁场等物理方法处理废冷却液的再生可行性及水玻璃的形态变化。

One-step preparation of HMX from DAPT was attempted, using ultrasonic as catalyst and ionic liquid as sorbefacient.

6以超声波为催化剂，离子液体为吸收促进剂，N_2O_5／HNO_3硝解DAPT一步法制备HMX。

There are various ways to measure distance, including ultrasonic sound waves and infrared light.

有各种不同的方法来测量距离，包括超声波声波和红外光。

Companies in different sectors for research and development of special purpose users of ultrasonic equipment.

公司可为不同行业用户研制开发特殊用途的超声波设备。

Methods Fresh litchi peel was air-dried, extracted with 70% ethanol solvent in ultrasonic wave. The extract was then purified with D101 macroporous resin adsorption chromatography, C18 solid phase extraction and high performance liquid chromatography. And the component purified was identified by mass spectrography.

新鲜荔枝果皮阴干，用70％乙醇溶液以超声波浸提法提取，提取液经过D101大孔树脂吸附层析、C18小柱固相萃取、高效液相色谱法分离、纯化后，采用质谱法鉴定结构。

Based on the description of freedom spherical ultrasonic motor, calculation method of work modal is studied.

本文在阐述了单定子三自由度球形超声波电机工作原理的基础上，研究其工作模态的确定方法。

This European Standard does not deal with the ultrasonic examination of the nodularity of spheroidal graphite cast irons.

本欧洲标准不适用于球墨铸铁节点的超声波检测技术。

The ultrasonic cleaners is to plus square wave signal of 50% on the matching circuit.

通常的超声波清洗机是在匹配电路上加占空比为50％的交流方波信号。

Ultrasonic testing using the through transmission squirter technique remains the predominant method of inspection of composite materials.

超声波探伤法用的是穿透传输喷水技术也是复合材料检测的主要方法。

A basic knowledge of microbiology, will be detected with a microscope observation of micro-organisms, medium Preparation, disinfection and sterilization, separation and purification of micro-organisms, bacteria counting method A chemical analysis of the theoretical knowledge and can use chemical analysis methods and equipment of the components of material analysis Master fermentation process principles, understanding of beer, liquor, fermentation production technology Master protein related knowledge, PAGE gel electrophoresis technology, high-speed centrifugal Genetic engineering master the basic theory of knowledge, the extraction and purification of genes, PCR principle, gene recombination technology Master of the basic theoretical knowledge, the immobilized enzyme, the enzyme preparation Application Master of animal and plant tissue culture techniques of experimental steps studied experimental apparatus: Balance (scales, electronic scales, Analytical Balance), or acidity, spectrophotometer, liquid gas chromatography, acid-base titration apparatus, microscopes, centrifuges, ultrasonic cleaning, constant temperature oscillation incubator, super-clean table, steam sterilization pot, the pot constant temperature water bath, PAGE device apparatus, oven, fermenter, such as PCR instrument.

具备微生物理论基础知识，会用显微镜检测观察微生物，培养基的制备、消毒与灭菌，分离与纯化微生物，细菌的计数法具备分析化学的理论知识，能运用化学分析和仪器分析方法对物质的组分进行分析掌握发酵工艺原理，了解啤酒、白酒、发酵生产工艺掌握蛋白质相关知识，PAGE凝胶电泳技术，高速离心掌握基因工程的基本理论知识，基因的提取和纯化，PCR技术原理，基因重组技术掌握酶的基本理论知识，酶的固定化方法，酶制剂的应用掌握动植物组织培养技术的实验步骤学过的实验仪器：天平（台天平，电子天平，分析天平）、酸度计、分光光度计、液气相色谱仪，酸碱滴定仪器，显微镜，离心机，超声波清洗器、恒温振荡培养箱、超净工作台，蒸气灭菌锅、恒温水浴锅，PAGE电泳装置仪器、干燥箱、发酵罐、PCR扩增仪等。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。