But Royal Mail said it is very unlikely the card was with them all that time as they regularly clean out their sorting office and post boxes.

But a friend saw a TV report about it and contacted the sorting office.

不过幸好y一位Siddeeq先生的朋友看到了电视新闻于是联系了他。

Experimental research of high-power and large-charge-transfer repetitive spark gap switch

高功率大电荷量重复频率气体开关实验研究

Investigation on Over Voltage of the Spark Gap Switch in a Wave Erection Marx Generator

陡化前沿Marx发生器中开关过电压的研究

An early radio transmitter using a discharge across a spark gap as the source of its power.

通过火花隙放电作为其电源的早期无线电发射机。

Repetition Pulse High Voltage Spark Gap

重复脉冲高压火花放电球隙

Experiment researches of rep-rate gas spark gap insulation recovery

重复率气体火花开关绝缘恢复特性

A three stage Marx bank was designed using synchronous trigger pulses for each spark gap.

把它安装在三级麦克思发生器中，采用同步信号触发每个球隙，获得输出电压信号的上升时间小于100ns。

Spark gap switches for high voltage pulsed discharge

高压脉冲放电用火花隙开关

Triggered spark gap contact with electricity or electric discharge

触发放电器触发火花隙触电或接触放出的电流

The structure and static operating characteristics of the spark gap switch were then studied in the paper.

然后，分析了气体开关的结构及其静态工作特性。

The Experimental Study of Breakdown Features for the Field Distortion Spark Gap with Optimized Electrodes

优化电极场畸变间隙开关动作特性的实验研究

A Real-Time Unit for Displaying the Spark Gap Condition during Electric Discharge Machining

电火花放电加工间隙状态实时监示装置

A Further Study on the Coaxial Spark Gap being Valuable

同轴火花隙值得进一步研究

Influence of Gas Pressure and Gap Distance on the Recovery Time of Gas Spark Gap Switch

不同气压和电极间距对开关绝缘恢复的影响

Development on planar spark gap switch with three electrodes

平面火花隙三电极开关研制及性能测试

Finally, applications of spark gap devices in respective fields are presented.

最后，介绍了电花隙器件在各个领域中的应用情况。

Analysis of the resistance characteristic of spark gap with three electrodes in pulsed circuit

脉冲放电回路中三电极火花间隙的电阻特性分析

Reflection multiple spark gap camera and its applications in dynamical Experimental Mechanics

反射型多火花摄影系统及其在动态实验力学中的应用

The design of spark gap states testing module

电火花放电间隙状态检测模块的设计

Study on mechanism of electrode erosion of high-power gas spark gap switch

高功率气体火花开关电极烧蚀机理研究