一种使用废弃煤灰制造的自密实混凝土及其该混凝土的制造方法，其特征是用废弃煤灰取代原有自密实混凝土技术中的传统添加剂和化学流动剂，使使用本发明技术制造的自密实混凝土的成本比使用原有技术制造的自密实混凝土降低，而质量相等或略有提高。
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The invention relates to a method for preparing a mugwort leaf oil microcapsule antibacterial crease-resistant fabric. The method comprises the following steps of: 1) emulsifying mugwort leaf oil in an emulsifying agent made of wall material; 2) performing complex coagulation reaction on the emulsif.....
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本发明涉及一种通过移动通信信号来实现定位的方法，其中基站通过多个天线发射多个电磁波束，每个电磁波束以不同方向进行发射且包含特定的方向信息，包括下列步骤：S1：检测移动终端接收到的电磁波束，并判定出每个基站发出的具有最强接收能量的最强电磁波束；S2：分别获取每个最强电磁波束包含的方向信息；S3：依据多个最强电磁波束包含的方向信息交叉得到移动终端的位置信息。本发明还涉及一种通过移动通信信号来实现定位的系统。本发明的定位精度较高，误差可控制在100米内，可更好地满足用户的需要。
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The invention discloses a catalytic asymmetric hydrogenation reaction. Of the present invention is the role of chiral catalyst, H2 of the prochiral unsaturated compounds to addition reaction to obtain the chiral product, wherein the solvent used in the reaction liquid polyethylene glycol compound. T.....
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The utility model relates to a duplex drainage standpipe and a system. The system comprises the duplex drainage standpipe in the building and a manhole at a lower end. The duplex drainage standpipe comprises a first drainage standpipe and a second drainage standpipe, which are arranged side by side .....
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