Electric tracing band can be classified into constant power electric tracing band and automatic electric tracing band.

电伴热带可分为恒功率电伴热带和自控式电伴热带。

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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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On this condition, the paper put forward a new electric wave transmition model in the microcell , which based on ray tracing method of Virtual Fountain Tree.

在总结前人工作的基础上，本文提出了一种新的基于“虚拟源树”射线跟踪技术的微蜂窝小区的电波传播模型。

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Mr. Melvin says he spends hours at the computer tracing power lines, looking for telltale shadows of electric towers or posts.

WSJ: Gulags, Nukes and a Water Slide: Citizen Spies Lift North Korea's Veil