Compound magnetic strip : capable of magnetizing and demagnetizing , alarm doesn t function anymore after demagnetization so that buyers and commodities can get across channel exit at the same time 复合磁条：可以充消磁，消磁后不再报警，顾客和商品可同时过通道出口
Details : made of special material , passive decoding demagnetization board needs no power supply and owns small volume , high demagnetization strength and long service life Ht无源解码消磁板:由特殊材料制成无需电源，体积小，消磁强度高，使用寿命长。 245mm222mm45mm重6 . 2kg网址：
We have resolved all of these complexities with a series of specially applied resonance patterns , designed expressly for you and for the particular aspect that we were integrating 我们已经用一系列特别实用的回响模式重新解决所有这些复杂性（译者注：这类似计算机硬盘格式化或磁盘消磁） ，为你和为特别的我们正一体化形象而设计表达。
We calculate the regression curve about length of erased magnetic record and lightning current peak . we analyze the error of recording data and find a new means about direct measurement of the max lightning steepness with magnetic tapes 作出磁带消磁长度与霄电流峰值的拟合曲线，对测量数据进行误差分析，找到利用磁带直接测量雳电流最大陡度的新方洁。
Abstract : this article analyzes the reason and influence of magnetic blow on welding arc during the welding process . through the adjusting and improving of the magnetic field distribution , adopting the anti - magnetic erasing method to eliminate the influence of magnetic blow for welding arc 文摘:分析了磁偏吹在焊接过程中对焊接电弧的影响以及产生原因，通过调整和改善焊接电弧周围磁场分布，并采用反消磁法，克服和消除了磁偏吹对焊接电弧的影响。
The second part is to develop the program of mtlcd about the magnetic tape wave - form process using matlab software . the mtlcd can display the signal of waveform with the magnetic record being erased in the screen of computer . the observer also can drought or zoom in the waveform at will 第二部分利用matlab作为开发工具编写磁带波形处理软件mtlcd ，该软件可将磁带被消磁后的波形信号显现在电脑屏幕上，并能对波形随意拉伸放大观察每一个细节。
Meanwhile it can filter the waveform and gather the envelope and calculation the current peak and max steepness of lightning by length of erased magnetic record . thirdly we need analyze the difference of length of erased magnetic record between kinds magnetic tape or pre - recorded sine wave on magnetic tape , and finding the min and max lightning current that can be recorded by magnetic tape . then we confirm the type of the magnetic tapes and the way of installing which fit to the line towers 同时对该波形进行滤波消噪，提取包络线计算磁带消磁长度和雷电流峰值及最大陡度第三部分根据mtlcd得出的数据分析不同雷电流通道下不同磁带、不同预录正弦波消磁长度的差异及磁带可以记录的最小雷电流和最大雷电流，找到可以在输电铁塔角钢上安装使用的磁带及其放置方式。
