There is no designated "source" language for these pairs—they are interchangeable when answering.Criteria: Participants only need to be proficient in both languages; native fluency is not required. Please look at the instructions of the first email for more information related to the task itself....
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4. According to the treating jobs, users can choose to configure axial-flow type high power gas quenching fan or centrifugal high power gas quenching fan. Optional Configuration 1. Furnace door: rotating/slide open/vertically up and down