超声波

Function that defend the tide watertightness,drive super a technical application,but get biggest and perfect.

防潮防水的性能，被超声波技术的运用，而得到最大的完善。

Ultrasonic wave propagates at the constant speed in the same medium and reflects when meets with obstacle.

超声波液位计是众多液位计中发展较快、应用较多的一种液位测量仪表。

Firstly ,a series of wearproof thin films are fabricated by Magnetic Filter anode vacuum arc source.

同时，针对一种行波型超声波电动机开展摩擦材料研究。

As a word, the method put forward is feasible from the primary research of the measurement system.

总之，通过对本测试系统进行初步的研究和探索，表明本文所提出的非接触式超声波液压压力检测方法是可行的。

Laboratory work and worksite tests are both described.

论述了超声波探伤的基本原理。

The effect of ultrasonic wave on extraction rate of corn cob xylan was studied.

本论文考察了用超声波法提取玉米芯木聚糖时各因素对提取率的影响。

The experimental results showed that ultrasonic cleaning of broznes in dilute sodium hexametaphosphate solutions are effective, this method was used for the brozne treatment firstly. We have also improved "zinc dust treatment method"and satisfactory results were obtained.

在工作中，首次应用了在六偏磷酸钠稀溶液中超声波清洗青铜器这一方法；对锌粉转化封闭有害锈方法进行了改进；选用ParaloidB－72材料做为青铜器苯骄三氮唑处理后的封护材料。

A multi degree-of-freedom ultrasonic motor using in-plane deformation of lead zirconate titanate elements was proposed.

提出一种基于压电陶瓷平面内应变的多自由度超声波电机。

A new multi-degree of freedom ultrasonic motor using in-plane deformation of lead zirconate titanate elements was introduced.

介绍了一种新型基于压电陶瓷平面内应变特性的多自由度超声波电机，该电机通过两个平面内的弯曲振动模态的叠加实现转子绕Z轴的转动；并利用伸缩振动模态分别与上述弯曲振动模态叠加实现转子绕X轴和绕Y轴的转动。

In addition to the research on the optimum conditions of ultrasound pretreatment and zymolysis, the effects of NaOH concentration, temperature, use level and reaction time on the yield, the purity and protein content of β-1,3-glucan were studied by response surface method.

采用超声-酶-碱法从啤酒废酵母中提取β-1，3-葡聚糖，在超声波预处理和酶解最佳条件的同时，利用响应曲面法研究分析NaOH浓度、温度、用量和时间对β-1，3-葡聚糖得率、纯度和蛋白质含量的影响。

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。