超声波

An ultrasonic signal that's undetectable to the human ear will scare off the varmint from up to 65 feet away.

一个人耳不能察觉的超声波信号会吓跑65多英尺以外的淘气动物。

A Three- dimensional-acoustic Doppler velocimeter is used to measure the velocity components of the flow field in all three coordinate directions for different discharge and measurement site.

利用三维超声波多普勒流速仪量测不同位置、不同流量下的流场，分析了测点位置和水深与植被高度比对时均流速、紊动强度及雷诺应力垂线分布的影响。

In this paper, the author discovers the relationship between air pressure and velocity of sound using ultrasonic sensor in local microenvironment.

本文在局部小环境下，使用超声波传感器测量声速的过程中，发现了气压变化与声速变化之间的变化规律。

This signal source is specially used in the experiment which measures the velocity of sound by ultrasonic.

它与实验中应用的声速测量仪及示波器配合，可以采用驻波法、相位法、时差法等测量方法来测超声波的速度。

Among the flowmeters discussed are orifice plate meters, venturi meter and standard nozzles, critical flow venturi nozzles, positive displacement flowmeters, turbine and related flowmeters, vortex shedding and fluidic flowmeters, electromagnetic flowmeters, ultrasonic flowmeters, and coriolis flowmeters.

在讨论的是孔板流量计米，丘米和标准喷嘴，文丘里喷嘴临界流，容积流量计，涡轮机和相关流量计，涡脱落和射流流量计，电磁流量计，超声波流量计和科氏流量计。

METHODS By the means of viscometry , the effects of reaction time , chitosan and acetic acid concentration on the hydrolytic velocity of chitosan by ultrasonic wave were investigated .

采用粘度测定法，探讨了超声波辐射时间与壳聚糖粘度的关系以及壳聚糖的浓度，醋酸的浓度对降解速度的影响。

Effect of relative molecular mass on shear stability of the polymer solution was investigated by means of ultrasonic instrument and rotary viscosimeter.

用旋转黏度计和超声波仪研究了1，5-己二烯用量对交联聚合物溶液表观黏度的影响及交联聚合物的相对分子质量对交联聚合物溶液抗剪切稳定性的影响。

Waxy maize starches were treated at a moisture content of 70% by ultrasonic. The properties of native and treated starches were studied with rotary viscosimeter.

采用超声波对含水量70%的蜡质玉米淀粉进行处理，运用旋转黏度计对处理前后的沈粉栩特性进行研究。

High-amylose maize starches were treated at a moisture content of 70% by ultrasonic. The properties of native and treated starches were studied with Brabender viscoamylograph and rotary viscosimeter.

采用超声波对含水量70％的高链玉米淀粉进行处理，运用布拉本德粘度仪以及旋转粘度计对处理前后的淀粉糊性质进行研究。

Meanwhile,they are widely assembled with the ultrasonic bottle washing machines of the pharmacy,tunnel baking network,rubber plug cleaning machine,fold filter core cleaning and distillation,blending of traditional Chinese medicine and crushing equipments.

同时广泛配套于制药机械中的超声波洗瓶机、隧道烘箱网带清洗机、胶塞清洗机、折叠式滤芯清洗机及中成药的提取、混匀及粉碎设备。

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。