It is about the ring screw thread smoke channel of the boiler shell type gas tube in the boiler field.
锅壳式烟管锅炉烟管内置水管的环形螺纹烟道，它涉及锅炉领域。
Bearing ring driving chain for discharging ash on burning coal boiler abruptly rupture in operation.
在燃煤锅炉中，用于驱动排灰链条的轴承环，在运行过程中突然断裂。
The waste heat boiler of sinter ring cold machine was developed to recover sensible heat of sintering mine.
为回收烧结矿显热，研制出烧结环冷机余热锅炉。
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