Abstract: A fly ash-based fire-prevention and extinguishing material with carbon dioxide mineralized and stored, and a preparation method thereof are provided. The preparation method includes: separately weighing 100 parts to 120 parts of water, 1 part to 3 parts of a solid strong alkali, and 20 parts to 40 parts of a fly ash as raw materials, pouring the raw materials into a reactor successively to obtain a resulting mixture, and stirring the resulting mixture at a high rotational speed; adding 10 parts to 20 parts of a solubilizing agent to the reactor, sealing the reactor, introducing carbon dioxide to the reactor at room temperature to maintain a carbon dioxide pressure to obtain a resulting slurry, and stirring the resulting slurry at a high rotational speed; and further introducing carbon dioxide into the reactor to increase the carbon dioxide pressure, and stirring the resulting slurry at a low rotational speed.

Abstract: Embodiments of the present invention provide an installation part and a module, relating to the field of mechanical designs and capable of reducing the quantity of installation parts and increasing the efficiency of assembling and disassembling an article that needs to be installed. The installation part includes: a slot configured to be clamped with a hoop, where the hoop is configured to fix a pole part onto a pole together with the pole part; and a first screw hole configured to be connected to a conversion bracket, where the conversion bracket is configured to connect the pole part and an article that needs to be installed. The embodiments of the present invention are applied to the installation of modules.

Abstract: An active antenna, comprising: a main board and at least one wireless module; a first buckle member set on the at least one wireless module, a second buckle member set on the main board corresponding to the first buckle member on the least one wireless module; the first buckle member of the at least one wireless module clasps the second buckle member of the main board, thereby fixing the wireless module on the main board. The active antenna has advantages of low maintenance cost and high maintenance efficiency.

Abstract: Embodiments of the present invention provide an installation part and a module, relating to the field of mechanical designs and capable of reducing the quantity of installation parts and increasing the efficiency of assembling and disassembling an article that needs to be installed. The installation part includes: a slot configured to be clamped with a hoop, where the hoop is configured to fix a pole part onto a pole together with the pole part; and a first screw hole configured to be connected to a conversion bracket, where the conversion bracket is configured to connect the pole part and an article that needs to be installed. The embodiments of the present invention are applied to the installation of modules.

Abstract: An active antenna, comprising: a main board and at least one wireless module; a first buckle member set on the at least one wireless module, a second buckle member set on the main board corresponding to the first buckle member on the least one wireless module; the first buckle member of the at least one wireless module clasps the second buckle member of the main board, thereby fixing the wireless module on the main board. The active antenna has advantages of low maintenance cost and high maintenance efficiency.