[名词解释] 反硝化细菌denitrifyingbacteria

4m3电铲最大挖掘半径为（）米。 ["12","14.4","13.5","14"] 纤维分解菌 cellulose-decomposing bacteria 无缝线路相邻轨条锁定轨温，规定（）。 ["为零","在锁定轨温范围内","不得大于5℃","不得大于±5℃"] 运矿汽车最大经济合理远距不超过（）km。 ["1.5","2.5","3.5","4.5"] 硝化细菌nitrifyingbacteria 反硝化细菌denitrifyingbacteria