A country reporting zero cases over a period of 14 consecutive months is believed to have interrupted transmission.
人们认为，一个国家的零病例报告连续达到14个月就属于阻断了疾病传播。
To be declared free of dracunculiasis, a country needs to have reported zero transmission and afterwards maintained active surveillance for at least three years.
要被宣布为无麦地那龙线虫病状态，国家需要具备零病例传播报告，并在此之后的至少三年内保持积极监测。
As this kind of microstrip hairpin filter does not require cross coupling between the non-adjacent resonators of the filter to obtain transmission zero, the design procedure of the filter is simple.
由于这种类型的微带滤波器实现传输零点不需要通过滤波器非相邻谐振器间的交叉耦合来获得，因此，设计过程非常简单。
The zero sequence component and the positive sequence component equations of transmission lines are derived on the basis of telegraph equations.
运用电报方程推导出三线-地耦合传输线零序分量和正序分量传输线方程。
To achieve inner-linked transmission chains in machine tools with electronic method instead of mechanical one, a novel computer-softwared synchronized electronic gearbox with zero SSE is presented.
针对机床内联传动链的数控实现问题，提出一种以软件方式实现的无静差同步电子齿轮箱。
In typical six-phase transmission system, half positive sequence, half zero sequence and half negative sequence fault components are independent of the variance of system impedance.
在典型的六相输电系统中，半正序、半零序和半负序故障分量不受系统阻抗变化的影响。
These conclusions are useful to optimise the design of the solitary wave transmission system near zero-dispersion.
这些结论对零色散孤立波传输系统的优化设计是很有用的。
The zero-sequence parameter of transmission lines especially of transmission lines with mutual inductances is of great important in the relay protection setting calculation of power system.
输电线路的零序参数尤其是多回互感线路的零序参数是电力系统继电保护整定计算需要的重要参数，所以其准确测量具有重要意义。
The paper proposes a method which corrects the Angle of zero-sequence current in the algorithm of differential equation used for distance protection and fault location of HV transmission lines.
本文针对高压输电线距离保护及故障测距中常用的解微分方程算法，提出了一种零序电流相位修正的方法。
In this paper, the transmission ability of the torque in a self-made cylinder coupling with zeolite-based ERF was investigated under zero field and different electrical fields.
本文用沸石和硅油配制的电流变液，在圆筒式电流变液联轴器上测试了在有无电场作用下扭矩的传递能力。
Not only the zero-sequence lumped parameters of the transmission lines but also the distributed ones are needed to measure.
电力工程上不但需要知道互感线路的零序集总参数+， 有时还需要知道分布参数。
At the same time, we theoretically analyze and numerically simulate the transmission properties of THz radiation pulses through very deep zero-order metallic gratings.
同时对零级深度金属光栅对太赫兹波透过特性进行了详细的理论推导和数值模拟。
The new method turned the volt-ampere characteristic equation of transmission lines into an integral form, then used least square method to solve the equations and got the zero-sequence parameters.
该方法是将互感线路的伏安特性方程转化为积分形式，并采用了最小二乘法求解方程组，同时得出各线路的零序自阻抗及线路间的零序互阻抗。
Properties of tunneling transmission in magnetic quantum structures have been analysed based on Schr dinger equation both in zero electric field and in sinusoidal one.
研究了零电场和正弦电场作用下的磁量子结构中自旋电子的隧穿输运特性。
The new method turned the volt - ampere characteristic equation of transmission lines into an integral form, then used least square method to solve the equations and got the zero-sequence parameters.
该方法是将互感线路的伏安特性方程转化为积分形式，并采用了最小二乘法求解方程组，同时得出各线路的零序自阻抗及线路间的零序互阻抗。
The incremental method, differential equation method and integral equation method are three main methods in zero-sequence parameters on-line measurement of transmission lines with mutual inductance.
输电线路的零序参数尤其是多回互感线路的零序参数是电力系统继电保护整定计算需要的重要参数，所以其准确测量具有重要意义。
In a method for selecting a transmission target terminal in a zero-forcing beamforming algorithm, information about a channel capacity of each terminal is received from all K terminals.
在迫零波束赋形算法中的用于选择发送目标终端的方法中，从所有K个终端接收关于每个终端的信道容量的信息。
The invention relates to a zero-order resonance antenna on the basis of left-right hand composite transmission wire, which can realize all-directional radiation under a low-profile structure.
本发明涉及一种基于左右手复合传输线的零阶谐振天线，可在低剖面结构下实现全向辐 射。
This Recommendation describes the transmission related attributes of single-mode optical fibre and cable with zero-dispersion wavelength shifted into the 1550 nm window.
本建议描述了一种在1550nm附近具有零色散波长的单模光纤和光缆的传输特性。
This Recommendation describes the transmission related attributes of single-mode optical fibre and cable with zero-dispersion wavelength shifted into the 1550 nm window.
本建议描述了一种在1550nm附近具有零色散波长的单模光纤和光缆的传输特性。
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