Filter ea moea e khothalletsoa ho nkeloa sebaka hang ka selemo kapa 10000-15000 km. Karolo ea filthara ea moea ke: 1, ho fana ka moea o hloekileng ka koloing; 2, adsorption ea mongobo le lintho tse kotsi moeeng; 3, boloka moea o hloekile e ke ke ea tsoala libaktheria, ho netefatsa polokeho le bophel......
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