摘要 |
An apparatus includes a hollow heater. The hollow heater includes a hollow supporter, a heating element and at least two electrodes. The hollow supporter defines a hollow space, the hollow supporter has an inner surface and an outer surface. The heating element is located on the inner surface or the outer surface of the hollow supporter. The at least two electrodes are electrically connected to the heating element. At least one of the at least two electrodes includes at least a carbon nanotube structure.
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