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 experiments on humidification desulfurization by high calcium coal ash were carried out at a thermo balance and a semi industrial test ring.
该文以热天平和半工业性热态试验系统对高钙煤灰增湿脱硫过程进行了研究。
Weather satellites have observed a ring of volcanic ash girdling the earth.
气象卫星观测到一个环绕地球的火山灰带。
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