The new study tested how fetuses in nearly 100 pregnant women responded to a specific stimulus, in this case, a "vibroacoustic stimulation, " which is a very low sound that makes a vibration.
新研究测试了近100个孕妇的胎儿对特殊刺激的反应，在这情况下，“声刺激”，一种有振波很低的声。
As these waves pound against the sea floor, they generate a constant vibration with a frequency of about ten millihertz, much too low for humans to hear but easily detectable with seismometers.
当这些压力波撞击海床时，会产生一种频率为0.01赫兹的连续振动，而对我们人类而言这个频率太低了，所以根本听不到，但却很容易被地震仪侦测到。
KVH's militarized DSP-4000 FOG is a high-performance, low-cost, all-fiber gyro that ensures high reliability, superior performance, and exceptional vibration, shock, and acceleration survivability.
K VH公司的DSP- 4000军用光纤陀螺是一种高性能、低成本的全光纤陀螺，可靠性高，性能优越，具有优秀的抗振动、抗冲击、加速度和生存性能。
This paper Presents a piezoelectric vibratory gyroscope with the properties of high sensitivity, high linearity, low shift and resistance to shock vibration and noise.
介绍一种高感度，高线性，低漂移，小型，量轻，价廉，并且耐冲击振动和噪声影响的压电振动陀螺。
Among other available heat engines, the stifling engine embodies some interesting features: high efficiency, low noise and vibration as well as the ability to use the sources of high energy density.
在其他各种热动力中，热气机具有许多特点：高效率，低噪音和振动，以及可利用高能量密度的各种热源等。
Due to vibration at low frequencies and high power, felt was inserted between the brass bands and the sides of the cores.
由于输出牛在低频率和高功率情况下会产生震动，在铁芯边缘和铜带之间塞入毛毡。
This is on par with Kawasaki's factory racers and helps reduce engine vibration, smooths power delivery and enhances low-rpm throttle response.
这是不低于川崎的工厂赛车手，并帮助降低发动机的振动，平滑功率传输，提高了低转速油门响应。
Excellent antifriction capability, can make the machine in low speed vibration or discontinuous sliding reduced to the minimum.
优良的减摩性能，可使机床在低速下将振动或间断滑动减为最小。
Effect of low freqency vibration on solidified behavior of ferro-carbon alloy was inspected in sand-mold Casting.
本文研究了在普通砂型条件下，低频振动使铁碳合金凝固组织的影响。
All of these provide a reference date for the applications of vibration drilling with low frequency torsional vibration.
为低频扭振型的振动切削应用于生产实践提供了参考数据。
Experiments have proved that the micro vibration sensor constructed by this new method has many advantages of small volume, low weight, low cost, high sensitivity and high accuracy.
实验证明，用这种方法构建的微振动传感器体积小、质量轻、价格便宜，并且具有很高的灵敏度和准确度。
However, if we make the machine spindle to achieve high accuracy, high speed, high rigidity and low vibration heat a small request, you need more parameters of the bearing itself is controlled.
而要想使得机床主轴能实现高精度、高速度、高刚度和振动低发热小的要求，则需要对轴承本身更多的参数进行控制。
Enterprise products are easy to operate, stable performance, low noise, small vibration and so on.
企业产品具有操作方便、性能稳定、噪音低、振动小等特点。
Imported bearings, little vibration, low noise.
采用进口轴承，振动小，噪音低。
When carrying on the modal analysis, studies that the low step vibration gets up the leading role, prepares for the further dynamic analysis.
对齿轮进行模态特性分析时，研究了齿轮的振动是低阶模态起主导作用，为齿轮进一步的动态分析做好准备。
No noise: the low speed motor reduced the mechanical vibration, totally solved the noise problem between gear and motor high speed running.
静音：超低速同步电机减少了机械振动，彻底消除齿轮及电机高速运转的噪声。
The vibration and low efficiency of Fume gas turbine were the most common problems found since it was put into operation, and the dynamic balance was the important cause for its vibration.
烟气轮机机组振动和低效率是机组运行以来制约机组平稳运行最常见的问题，而动平衡又成为诱发机组振动的重要原因。
The structure characteristics and operation principium of new type pilot operated all open safety valve under low pressure and vibration working conditions are introduced.
介绍一种在超低压和振动条件下工作的先导式全启安全阀的结构特点及工作原理。
Low vibration, low noise, low electromagnetic interference, conforms to the requirements of environmental protection, especially suitable for clean work environment.
低振动，低噪音，低电磁干扰，符合环保要求，特别适用于无尘工作环境使用。
On this basis, a design criterion of small vibration and low noise for the dual circular-arc gears is given out in this paper.
在此基础上，本文给出了双圆弧齿轮传动的小振动、低噪声设计准则。
With the increase and demand in low voice and low decibel vibration bearing in world market, the research in low noise bearing has become more and more significant.
随着国内外轴承市场对低噪音轴承的需求量的增加、对轴承振动与噪声分贝值越来越低的要求，使得低噪音轴承的研制工作显得日益重要。
It has little vibration, low noise, low energy consumption and low cost, which can reduce cost for customers.
震动小，噪音低，能耗低，成本低，可为客户降低成本。
Complete due to mechanical function, easy operation, smooth running, small vibration, low noise, processing speed, low cost, by the majority of customers.
由于机械功能齐全、操作方便、运行平稳、振动小、噪音低、加工速度快、成本极低，受到广大客户一致好评。
Having small vibration, low noise, can be directly installed or placed in the gas point, does not require a dedicated compressor room, and the gas pipeline connecting device is also very short.
机组振动小、噪声低，可以直接安装或放置在用气点，不需要专用的压缩机房，与用气设备的连接管路也非常短。
Due to such problems as bigger stepper Angle, and low speed vibration, the use of the stepper motor in high precision conditions is limited.
但是由于步进电机存在步距角较大及低速振动等问题，限制了它在高精度场合下的应用。
In this paper low-frequency vibration problems of rotating machinery are investigated.
应用时频分析方法研究了回转机械低频振动问题。
The vibration causes of evaporation gas compressor for ethylene low temperature storage facilities were analyzed.
对低温乙烯贮存装置闪蒸气压缩机振动原因进行了分析。
The results show that the effects of orientation of piezoelectric ceramic on high order vibration characteristics of beam are low.
结果表明，当压电梁振动阶数较高时，陶瓷片的横向布置对梁的振动特性影响很小。
The results show that the effects of orientation of piezoelectric ceramic on high order vibration characteristics of beam are low.
结果表明，当压电梁振动阶数较高时，陶瓷片的横向布置对梁的振动特性影响很小。
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