超声波的

These ultrasonic oscillations may be continuous, but in most cases they are short bursts of ultrasonic energy, stimulated by various amplitude peaks of the audible signal, and dying out quickly, but recurring frequently.

这些超声波震荡可能是连续的，但大多数情况下，它是由可听范围信号电平的不同峰值激励产生的一些超声能量的短脉冲，很快消退但频繁的出现。

The bulbs of the Lycoris radiatat were pretreated with comminution, ultrasonic and basification methods. The effect of the pretreatment was studied, via observing microscopic character of the cell wall fragmentation of Lycoris radiatat and the yield of galanthamine with SC-CO2 extraction.

采用粉碎、超声波和碱化预处理方法处理石蒜鳞茎原料，通过对原料细胞壁的破碎状况的显微特征观察，以及SC-CO2提取加兰他敏提取率的变化考察了预处理的效果。

Yantai Hyde construction machinery factory occupies 60,000 square meters, construction area of 40,000 square meters, with 5,000 square meters of modern production of steel structure of the workshop, a CNC cutting, Auto Group legislature, automatic welding and alignment, such as ultrasonic testing Composed of special steel structure production lines, with the domestic industry with a unique large-scale surface treatment equipment Shotblast machine and its supporting mechanical processing workshops, casting, casting workshop, the tower crane workshop, digging bucket shop, pull the plant and paint shop And so on.

烟台海德建筑工程机械厂占地60000平方米，建筑面积40000余平方米，拥有5000平方米的现代化生产钢结构的车间，采用数控切割，自动组立，自动焊接及校直，超声波检测等组成的专用钢结构生产线，拥有国内同行业中独特的大型表面处理设备抛丸机及与其配套的机械加工车间，铸造、铸钢车间、塔机车间、挖斗车间、扳金车间及喷漆车间等。

The components,functional features,adaptability of environment and installation requirement of coal bunker monitoring system in mine are also gave.

简单介绍了智能超声波物位仪的工作原理，阐述了井下煤仓监控系统的组成、功能特点及其对井下工作环境的适应和安装要求，最后对可能的测量误差进行了分析。

The components,functional features,adaptability of environment and installation requirement of coal bunker monitor ing system in mine are also gave.

简单介绍了智能超声波物位仪的工作原理，阐述了井下煤仓监控系统的组成、功能特点及其对井下工作环境的适应和安装要求，最后对可能的测量误差进行了分析。

Cooling-curves of different composition after ultrasonic blend were measured with the guide of theory forecast results of the binary system of capric acid and myristic acid. The experiment phase diagram was protracted, eutectic temperature and composition range were discovered of the binary system. Phase change properties of eutectic composition were tested with DSC, the change of the wave shape of eutectic composition after 300 thermocycling was tested with IR.

以癸酸-十四烷酸二元体系的理论预测相图为指导，测量了该体系不同组成超声波混合后的步冷曲线，绘制了该体系的实验相图，判断出最低共熔温度与组成范围；采用DSC测试最低共熔组成的相变性能，采用IR检测最低共熔组成300次热循环前后的波形变化。

Chlorophenol (4-CP) solution was treated by US/UV synergetic catalysis technology and the major influencing factors such as the sound intensity, initial pH value of solution, initial 4-CP concentration, the amount of catalyst and medium temperature were examined in this paper.

选择掺杂过渡金属离子Fe3 +的纳米TiO2 为催化剂，研究了US UV协同催化氧化水中对氯苯酚(4 CP)的降解效果，考察了对氯苯酚的起始浓度、超声波声强、溶液初始pH、饱和气体种类、反应温度和催化剂投加量对氯苯酚降解速率的影响。

The principle of the micro circular traveling wave ultrasonic motor is described mostly,which include the structure of the mo- tor,the principle of traveling wave,the principle of elliptical motion ,the drive principle of the motor.

重点介绍了微型环型行波超声波电机的结构、行波的产生、椭圆运动的产生、驱动原理等，最后介绍了制作这种电机的实验结果。

Ultrasonic measurement method is a new one. It has many advantages, such as, not changing the profile of the flow and characters of the fluid, non-invasion, no pressure losing and can work under the severe conditions. Collecting the flow noise signals at the upstream and downstream of the pipe, adopting the cross correlation method to analysis signals, calculating the cross correlation function and finding the peak of it, then we can get the transit time.

超声波流量测量具有不改变流动状态与性质、非接触、耐恶劣环境等优点，通过对所采集的上、下游流动噪声信号进行相关分析，其互相关函数的峰值位置所对应的时间，为流体流过上、下游传感器之间的距离所用时间，进而计算出流速和流量。

Firstly, variables which were acquired for the above two kinds of classification system were obtained from field and laboratory investigation of the core samples as well as test of supersonic waves in drilling holes. Secondly, distribution functions and parameters of all variables are determined using statistic method. Thirdly, 20000 RMR values or BQ values and cumulative distribution function of these RMR or BQ values have been obtained utilizing Monte—Carlo method and the results are plotted. Finally, risk analysis can be made from above results.

风险评价方法步骤如下：（1）首先通过岩芯样品的现场观测和实验室试验及钻孔岩体超声波测试获得两种分类所需的变量；（2）通过统计分析和判断得出各变量的分布函数及参数；（3）运用Monte—Carlo模拟方法获得2万个RMR值或BQ值及相应的累积分布函数，并将结果绘成岩体质量描述图；（4）运用以上结果作出岩体质量风险分析。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。