Considering the very short particle residence time in the free-fall reactor, air was directly used as carrier gas to study the fast pyrolysis and sulfur evolution of coal under oxidizing atmosphere.
充分利用煤颗粒在自由落下床反应器中停留时间短的特点，直接用空气做载气，对自由落下床反应器中煤在氧化性气氛下的快速热解行为和硫的变迁进行了研究。
The results of the laboratory experiment show that under the air preparing or oxygen oxidizing ore, the uranium can be leached from ores by natural ore-bearing aquifer groundwater.
同时室内浸出试验结果表明：在空气预氧化和氧气作氧化剂的条件下，用天然含矿含水层的地下水可以成功浸出矿石中的铀。
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