Low and medium temperature heaters have wing shape heating elements and high temperature heater has tubular heating elements.
低、中温型加热器采用翅片式电热元件，高温加热器采用管状元件。
Low and medium temperature heaters have wing shape heating elements and high temperature heater has tubular heating elements.
低、中温型加热器采用翅片式电热元件，高温加热器采用管状元件。
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