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The application discloses a liquid supply assembly and an atomizer. The liquid supply assembly comprises a first shell, an air inlet, and a gas guide pipe in communication with the air inlet and arranged in the first shell. A cavity with an opening is formed between the outer wall of the gas guide pipe and the inner wall of the first shell. A sealing cover is connected with the first shell and seals the cavity to form a closed first liquid storage cavity. The sealing cover is provided with a liquid outlet and a mounting hole. A sealing block is arranged at the liquid outlet. The sealing block can be deformed and at least partially separated from the liquid outlet under the action of an external force. At least part of the gas guide pipe is arranged in the mounting hole in an interference fit to be sealingly connected with the sealing cover.

This invention discloses a nodal-type well-induced polarization field observation device and method. By setting up a downhole data acquisition device and a ground receiver, the downhole data acquisition device includes a data transmission module, a multi-node acquisition unit, and a counterweight. The multi-node acquisition unit includes multiple node acquisition modules and multiple connection modules. The modular design enables digital transmission of downhole signals, avoiding signal coupling caused by long cables in traditional well-induced polarization observation. Through the nodal observation method and flexible connection modules, the large electrode potential gradient measurement requirement specified in the well-induced polarization law is achieved in small-diameter boreholes, increasing the useful signal strength. The nodal design of the transmission section allows for arbitrary replacement of the number of node acquisition modules, improving data acquisition efficiency, and also allows for arbitrary replacement of the node sampling units, greatly improving the applicability of the well-induced polarization field observation device.