An anti-counterfeit system and method for passive radio frequency label are disclosed, the system includes: the anti-counterfeit module of label, by the user interface, the production owner adopts the general international coding scheme to convert the true EPC code into the fake EPC code and the fak.....
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The invention provides a concrete paving brick capable of clarifying air produced by using building waste and recycled glass and the manufacturing method thereof. The paving brick comprises an absorption layer and a foundation layer, the absorption layer comprises cement, aggregate, titanium oxide a.....
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The invention provides a cascade controller with analog single-phase active power filter, which includes a control circuit and connected to the main circuit, the control circuit includes a first proportional integral controller, a multiplier, a subtractor, feedforward control , a second PI controlle.....
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本发明提供一种水基嵌段聚氨酯及其制备方法，其特征在于它含有由用于形成软段相的（Ａ）组组分的反应产物与用于形成硬段相的（Ｂ）组组分的反应产物所形成的预聚物在水中继续反应所得的聚合物。（Ａ）：催化剂０．０１－０．２重量份；聚醚或聚酯二元醇３０－１００重量份；芳香族或脂肪族二异氰酸酯５－３０重量份；扩链剂短链脂肪族二元醇２－１０重量份；（Ｂ）：芳香族二异氰酸酯５－２０重量份；交联剂三羟基多元醇０．１－２．０重量份；扩链剂短链脂肪族二元醇２－１０重量份；含羧基的短链脂肪族二元醇２－１０重量份；短链脂肪族有机叔胺类中和剂２－１０重量份。本发明还提供通过施用所述聚氨酯所得的具有防水、保暖、透湿性的材料。
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The invention relates to a method for extracting an area target of an image based on fuzzytopology, which comprises the following steps: an original image is treated in advance; an optimal threshold value T is dawn into; an object to be extracted is defined as a fuzzytopology object; the optimal thr.....
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