This system can change the synthetic wavelength chain according to the distance to be measured. The inphase state of the interference signals, which is difficult for phase measurement, can be avoided by changing the wavelength freely. In addition, this system can realize the dimension calibration between the workpiece and the gauge block at a shortest measuring chain.
该测量系统可以根据待测距离选择合成波长链完成由粗测到精测的过程、通过波长的调谐能够避免零相位的测量，并在测量链最短的情况下实现了被测量和量块的直接比对，适用于孔径、平行平面间距的测量。
It has the capability of rejecting interference, the ability for long distance and is very reliable.
该方式具有抗干扰能力强、通信距离远、可靠性高等特点。
The paper introduces the hardware structure of CAN Bus intelligent adapter using advantages of high dependability and Real-time control of CAN bus, and adopting SJA1000 as CAN control chip, FIFO twin port RAM and PCA82C250 as interface chip of CAN controller designed for long-distance and strong interference special environment of mine monitoring.
针对矿井监控中距离远和干扰性强的特殊环境，利用CAN总线高可靠性和实时控制的优点，采用SJA1000作为CAN控制芯片，使用了FIFO型双端口存储器，并使用PCA82C250作为CAN控制器接口芯片，设计了CAN总线智能适配卡的硬件结构。
In this paper, the method for determining the distance between dynamite focus to ghost reflection interface is discussed, and the influence of ghost reflection interface on seismic shooting is analyzed, demonstrating how to select the optimum well depth to minimized various secondary interference caused by focus, obtain relatively good seismic shooting wavelets and collect ideal seismic data.
本文讨论了确定炸药震源距虚反射界面距离的有效方法，分析了复杂地表条件下虚反射界面对地震激发的影响，阐述了如何用之选择最佳激发井深，尽可能地减小由震源产生的各类次生干扰，获得频率响应较好的地震激发子波，以便采集到理想的地震资料。
To investigate whether MyosinⅩhas effects on neuronal migration, the SVZa neurons were transfected with the MyosinⅩ-siRNA, then re-aggregated and cultured and their migration distance and numbers are analysied 24h later. The migration distance and numbers of cultured re-aggregating SVZa neurons were changed by expression of MyosinⅩ- siRNA, whereas scramble siRNA had no effect. The results showed that the interference of MyosinⅩmade neuron lower the ability of migration. To sum up, MyosinⅩplays an important role in the migration of neuron migration of SVZa.
进一步，分离RMS区域的成神经细胞，利用构建的GFP融合表达载体MyosinⅩ-siRNA和scramble siRNA转染分离后的成神经细胞，悬滴法培养成团，模拟体外外植体包埋培养，24小时后，表达scramble siRNA的成神经细胞大量从细胞团中迁移出来，而表达MyosinⅩ-siRNA的成神经细胞迁移的数量明显减少，细胞迁移的距离也明显缩短，与同一细胞团中未被转染的成神经细胞和表达scramble siRNA的成神经细胞相比差异显著，上述结果表明：减低内源性MyosinⅩ表达抑制成神经细胞迁移，MyosinⅩ在SVZa成神经细胞的迁移中起着重要的作用。
Several kinds of canon procedures for forward link power control in CDMA cellular system, including theory analysis and reality implement, have been discussed and analyzing, such as user-distance-based power control, signal-interference-ratio-based power control, centralized traffic channel power, centralized power control both on pilot channel and traffic channel, fast power control in forward link, etc.
几种典型的CDMA系统前向链路功率控制方法，包括理论分析以及实际实现的方案，例如基于用户距离的功率控制方案、基于接收机SIR的功率控制方案、集中式的前向链路业务信道功率控制方案、考虑前向链路导频信道和业务信道的集中式功率控制方案、前向链路的快速功率控制方案等，在本文中都进行了详细的分析和讨论。
The overcutting on tool end is checked via comparing the tool radius with the circumradius or the radius of inscribed circle, and the touch interference of tool body based on the symbol of the vector distance from the triangle vertex to the tangent plane of tool body column.
在曲面加工的无干涉路径规划中，通过恰当选择刀具初始位置避免了接触点处的曲率干涉；通过比较刀具半径与曲面上三角片外接园半径的大小即可判断刀具底面干涉；而根据三角片顶点与刀杆切平面的有向距离的正负来判断刀杆碰撞干涉。
How to maintain the right distance from the light rail, we can enjoy the convenience of traffic, while not by its interference.
如何保持正确的距离轻轨，我们可以享受便捷的交通，而不是干涉。
The results showed, the main reasons for limited individuals and endemic distribution of this species were prolonged fruiting period, short distance of seed dispersal, low reproduction value and frequently interference by flooding.
virginica进行了调查、试验和比较研究，表明丰都车前果期长、种子不适宜长距离传播和生殖值低以及长江水淹干扰是其狭域分布和数量稀少的主要原因。
The factory standard test conditions are a widen area without near frequency interference in daytime, the height is not less than 8 meters, the effective sight distance of transmission is 3000 meters.
工厂标准测试是在白天郊外无邻频干扰的开阔地，架高≥8米时传输距离≥2000米。
This, as a result of various factors will cause greater detection system deviation; Because detection of complex, multi-point measurement. long distance signal transmission and the impact of all kinds of interference, the system will detect the stability and reliability of decline.
这样，由于各种因素会造成检测系统较大的偏差；又因为检测环境复杂、测量点多、信号传输距离远及各种干扰的影响，会使检测系统的稳定性和可靠性下降。
The method can ensure high distance resolution of the signal and form pattern null in the direction of the interference. Simulation results demonstrate the effectiveness of the method.
该方法能在保证距离高分辨特性的前提下，在干扰方向形成较宽凹口，文中给出了实现框图并仿真证实了该方法的有效性。
It is found that comparing with compact single circuit transmission mode, T-type compact transmission mode of two circuits on the same tower and conventional transmission mode of two circuits on the same tower, the transmission mode of two circuits with same phase sequence in the same tower window need narrower corridror width, and the radio interference and audible noise caused by this transmisison mode is relatively lower, especially, the corona loss is reduced evidently, thus better economic and social effects can be obtianed by applying this transmission mode in a short distance under a centain condition.
从走廊宽度、电磁环境、潜供电流和防雷特性4个方面对750 kV同塔同窗同相序紧凑型输电方式进行了分析，发现与单回紧凑型、同塔双回T型紧凑型及同塔双回常规型输电方式相比，采用同塔同窗同相序紧凑型输电方式所需的走廊较小，无线电干扰和可听噪声相对较低，尤其是电晕损失明显减小，采用这种方式在一定条件下可获得较好的经济效益与社会效益。
First it chooses the ultrasonic sensor in accordance with the mechanism of partial discharge and the ultrasonic character and its propagation rules. In order to ensure the safety and reliability of the detector, it designs the photoelectric isolation circuit module, which realizes the strong and weak electricity power isolation with the optical transmission method. In the analog signal pre-processing unit and sampling trigger circuit design part, it completes the design of amplifier, band-pass filter circuit, sampling trigger circuit. In the high-speed data acquisition modules part, it mainly completes high-speed data collection and its storage. Because the speed of single-chip can not keep up with the sampling rate of ADC, it designs 20-bit address generator with the hardware to complete the storage of high-speed data. At the same time it completes the design of the discharge display circuit, alarm and reset circuit. RS485 inte***ce realizes the communication with the host computer and ensures the communication distance and the noise immunity. In order to analyze the relationship between the ultrasonic signal and the discharge, eliminate noise interference and accurately extract the partial discharge pulse signal, it introduces the extraction method of discharge signal using the wavelet transform. Finally, it makes prospects at the partial discharge detector and proposes some methods of thinking from several aspects to do further research and improvement of the system.
首先根据局部放电的发声机理和超声波的特点及其传播规律选择了合适的超声波传感器；为保证检测仪使用的安全可靠，设计了光电隔离模块电路，用光纤传输的方法实现了强弱电的电气隔离；模拟信号预处理单元中设计了放大电路、带通滤波电路、采样触发电路；高速数据采集模块中设计了高速数据采集和存储电路，由于单片机速度远远赶不上AD采样的速度，用硬件设计了20位地址发生器，来完成对高速数据的存储；同时系统中还设计了放电显示、报警电路以及复位电路；系统与上位机的通讯采用RS485通讯接口形式，保证了上位机与下位机之间的通讯间隔和抗干扰性；为了分析超声波信号与放电之间的关系，消除噪声干扰，正确提取局部放电脉冲信号，文中先容了利用小波变换提取放电信号的方法；最后本文对局部放电检测仪的研究提出了一些展看，从几个方面提出了对系统做进一步的研究和改进的方法思路。
At a location where the television signal field strength was about 70 dBmV/m, a spurious emission of 2nW level would generate interference to television picture within a distance of 5 metres if it fell on the most sensitive part of the receiver passband of the television channel e. g. the frequency of the television carrier.
在一个接收到电视台发出来的讯号强度达 70dBmV/m 的地方测试时发现如果一个 2nW 强度的谐波而频率又刚好落在电视机的接收频道频宽中最敏感的部份时，该谐波可在五米范围内对该电视画面造成干扰。
The target of search, recognition and tracking are carried out byradar of the millimeter wave detector in the far distance. When the range to the target iscloser, the error of angle measurement is quite serious, even the target is lost because ofthe radar target angular Glint. While the passive radiometer can overcome thisshortcoming, and the more important is that it dose not launch the electromagnetic wave, so it has the very high hiding and the very good resistance to interference. Under thesame condition, it is smaller than the radar, and the consumption energy is also fewer.
毫米波探测器在远距离由雷达进行目标的搜索、识别和跟踪，当接近目标时，由于主动式雷达存在目标闪烁效应使得测角误差相当严重，甚至丢失目标；而被动体制的辐射计却能较好地克服这一缺点，重要的是毫米波辐射计不发射电磁波，具有很高的隐蔽性和很好的抗干扰性能，同等情况下比雷达体积小、消耗的能量少。
The research shows that in spite of the large physiochemical distance between amino acids and terminators, the mutation between them can still happen frequently and there exists the interference of mutation for different codons.
尽管氨基酸与终止信号的理化距离很大，但它们间的突变还是较频繁地发生，而且在密码表的诸密码子间存在干涉现象；密码进化总体上趋向于终止密码子减少的方
In experimental aspect: 1 A 2D image of an object situated at 0.52 meters is reconstructed with circular interference fringes in the laboratory.2 An experimental is completed to demonstrate 2D imaging with GVSFL fringes, adapting multi-direction relative motion.3 An experiment is completed to demonstrate 2D imaging with GVSFL fringes, the object traveling through the fringes for only one time.4 Clear circular fringes are formed at the distance of about 60 meters and its parameters are well consistent with computed parameters.5 GVSFL fringes are formed which parameters are well consistent with computed values.
在实验室利用环状干涉条纹对0.52米远的散射目标成像，获得了较好质量的目标二维像；2）完成了利用变空间频率直线条纹多方向扫描目标时的回波数据重建目标二维像的实验室实验；3）完成了变空间频率直线条纹对一次经过条纹场的目标成二维像的实验室实验；4）在约60米的距离上形成了清晰的环状条纹，条纹参数与估算的结果比较一致；在约50米的距离上形成了清晰的空间频率渐变直线干涉条纹，条纹参5）数与估算的结果比较一致。
In some situations, the distance required to prevent interference may be up to 200 metres.
在某些情况下，阻止干扰的距离坑达到200米。
The results of comparative observation experiment at Xi'an geoelectric station show that the decay of ambient noise is very quick. If the distance of geoelectric measurement zone from the interference sources is 200 m, the noise level will be reduced by one order of magnitude.
对西安地电台周围环境噪声干扰进行了实验研究，结果表明，环境噪声的衰减是很快的，地电测区避开企事业单位200m，环境噪声电平即可衰减1个数量级。