The present invention relates to an insect repellant fabric and a method for making the same. The method of making the, comprises the steps of dissolving a polysaccharide compound in an aqueous solution; heating said solution; adding a prytheroid mixture to said solution; initiating graft polymeriza.....
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本发明涉及变压器故障气体监测系统及方法，采用油气分离装置(100)和包括分布反馈式激光器(206)的光纤气体传感器(200)。油气分离装置(100)将变压器中的故障气体分离到气室(104)；光纤气体传感器(200)中的分布反馈式激光器(206)的输出光传至气室(104)中的光纤气体传感头(201)，再送至光探测器(202)作光电转换，然后再送到带通滤波器(203)进行滤波及放大，再输入到FPGA(204)和工控机(208)进行分析进而对变压器状况做出判断。本发明的系统及方法可以使多个不同的气体传感头共用同一套光源和检测系统，实现低成本、多点、多种气体的同时测量。
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本实用新型公开了一种砖，包括砖体，所述砖体设有至少一个用于与柱连接的槽位。以及一种使用该砖在水上建堤的方法，包括如下步骤：（1）在水底钻出多个桩孔；（2）各桩孔灌注混凝土形成混凝土柱；（3）沿混凝土柱向水底叠放若干砖，所述砖之间紧密连接形成墙体；（4）所述混凝土柱与所述砖之间的间隙填充砂浆。
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From The Risale-i Nur Collection. Islam. 作者/Author: Bediuzzaman Said Nursi出版社/Publisher: Nile Publishing
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The invention relates to a resonant switched capacitor direct current voltage converter which comprises a first voltage node, a second voltage node, a first switch, a second switch, a first diode, a sThe invention relates to a resonant switched capacitor direct current voltage converter which compri.....
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