一种高精度光纤布喇格光栅传感器，其中气体吸收谱线用作动态波长频率基准以便连续校准激光光源的波长。所述光纤布喇格传感器包括：将来自激光器的光分为两束的光纤定向耦合器；让所述光线的一部分通过的气体单元；用于监控通过所述气体单元的光线以便确定气体吸收谱线（并因此确定光的波长）的第一光探测器；用于监控从布喇格光栅反射回来的另一部分光线并确定波长的第二光探测器；和用于同时接收来自两个光探测器的信号的计算机。
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本发明涉及一种养颜中药制剂及其制备方法，该制剂对胃肠燥热、脾气虚所至便秘、月经不调等症具有保健和治疗功能。该制剂是由芦荟、薏苡仁、蒺藜、牡丹皮、白芷、益母草等原料药制成的。本发明所述的制备方法是将芦荟、薏苡仁、蒺藜、牡丹皮、白芷醇提２次，合并醇提液，冷藏，滤过，滤液备用。除珍珠粉外，益母草等其余４味分次加水煎煮，合并煎煮液，浓缩，醇沉，冷藏，滤过。滤液和上述芦荟等醇提液合并，回收乙醇，减压干燥，粉碎成细粉，和珍珠粉混合后，加入适量辅料，混匀，干压制粒，即制得本发明药物的活性组分。
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For measuring strain in one direction within the plane of the fabric strain sensor (10), said sensor (10) comprising: a substrate coated on the elastic fabric (30) on the conductive particles or fibers and a mixture of the elastomer matrix (20).
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The invention relates to a feature weighing computation method based on a structural constraint in a Chinese information retrieval. The method comprises the following steps: a. carrying out structuring processing to inquiry and obtaining a structuring inquiry result, wherein the structuring processi.....
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The invention relates to an RFID (Radio Frequency Identification Device) electronic seal based container management system and method. The management system comprises an RFID electronic seal, sensing equipment and a control device, wherein the control device is used for giving a sealing or opening c.....
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