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Aerosol is one of the pharmaceutical dosage forms, which means that the medicine and the propellant are jointly enclosed in a pressure-resistant container with a valve. When in use, the pressure generated by the vaporization of the propellant can be used to spray the medicine in a quantitative or non-quantitative manner. The preparations. The sprayed medicine is absorbed through the respiratory tract or skin and mucous membrane to produce effect.
Aerosol
"Refrigerants, also known as refrigerants and refrigerants, are the intermediary substances used in various heat engines to complete energy conversion. These substances usually use reversible phase changes (such as gas-liquid phase changes) to increase power. For example, in steam engines Steam, refrigerant in refrigerators, etc.
Refrigerants
Foaming Agents
Blowing agents are substances that make the target material pores. It can be divided into two categories: chemical blowing agents and physical blowing agents. Chemical blowing agents are those compounds that can release gases such as carbon dioxide and nitrogen after being heated and decomposed, and form fine pores in the polymer composition.
Solvent
Solvent is a liquid (gas, or solid) that can dissolve solid, liquid or gaseous solutes (solvents and solutes can be solid, liquid, or gas), and then become a solution.
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