self-regulating electric heat tracing 自控温电伴热
electric field vector heat tracing 电伴随加热
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Electric heat tracing is economical, reliable and easy to construct, maintain and control.
电伴热既经济可靠，又方便施工、维护和控制。
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Electric heat tracing and steam jacket heat tracing in sulfur recovery unit have been compared in the light of economy and unit features.
从经济及装置特点两方面对硫磺回收装置电伴热和蒸汽夹套伴热进行了比较。
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