An insulatingblock 10 mm thick completely wrapped in aluminium foil is placed on top of the cores.
一个10毫米厚，并完全用铝箔包裹起来的绝缘块放在芯体的顶部。
2
It includes: the out oscillating flow tube, the inner oscillating flow tube, the thermal insulatingblock cover and the glass vacuum tube.
包括：外层振荡流热管、内层振荡流热管，保温堵盖、玻璃真空管。
3
The geothermal insulatingblock produced by the method has the advantages of low cost, good thermal insulation effect and totally replacing the foam cement.