Include a field with the current UTC time-stamp in it and check it on the server. If it is too far in the past, or if it is in the future, the form is invalid.
包含一个存储当前UTC时间戳的字段，并在服务端检查它，如果它是太遥远的过去，或者是将来，那么这个form是无效的。
The radiation pattern in the near and far field of each frequency component of the spectrum of current pulse on a transmission line.
传输线线上脉波电流之频谱与分布及其各频率成份之辐射远近场型之差异。
The near and far electromagnetic field are synthesized by summation of the electromagnetic field of short current segments or Hertz dipoles.
以很多小段赫芝偶极之完整电磁场合成一任意线电流之近场与远场电磁场。
Mud pulse modulation data flow is thin, but current transmitter as far distance transmission means has been widely applied other field, technology is mature.
泥浆脉冲方法目前应用较多，但数据流量稀疏，电流环技术作为远距离传输手段已被广泛的应用于其它领域，技术成熟。
A method for planar near field to far field transformation based on element current reconstruction is presented and the basic principle of this method is given.
本文提出了一种新的基于单元电流重构的平面近远场变换方法，给出了该方法的基本原理。
The far field diffractive pattern calculating formula for diffraction antenna with continuous phase structure is derived by current distribution method in antenna theory for the first time.
应用天线理论中的电流分布法，首次推导了具有连续位相结构的反射式毫米波衍射天线的远场衍射图计算公式。
The far field eddy current testing system for trial was developed.
建立了试验远场涡流检测系统。
In this paper, a new method is presented for the calculation of surface current distribution and far region radiation field of the short backfire antenna.
本文提出一种用于分析和计算短背射天线表面电流分布和远区辐射场的方法。
The near and far electromagnetic field are synthesized by summation of the electromagnetic field of short current segments or Hertz dipoles.
以赫芝偶极之电磁场合成任意长度偶极天线在球面上电磁功率密度流之时变玻因亭向量。
The near and far electromagnetic field are synthesized by summation of the electromagnetic field of short current segments or Hertz dipoles.
以赫芝偶极之电磁场合成任意长度偶极天线在球面上电磁功率密度流之时变玻因亭向量。
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