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Compound cua kub & cua txias circulator
Sib xyawCua Sov & Cua Txias CirculatorYog hais txog cov khoom siv ncig ua si uas muab cov chaw kub thiab txias rau cov tshuaj tiv thaiv kettle, tank, thiab cov tub yees kuaj seev thiab cov khoom siv. Mas siv rau hauv cov tshuaj lom neeg, cov khoom siv roj ntsha Txhawb nqa iav tiv thaiv, cov khoom siv tshuaj ntsuam, calorities thiab cov tsev kawm qib siab, chaw ua haujlwm Hoobkas thiab chaw ua hauj lwm zoo.
