单词	density of seam
释义	density of seam 煤层密度
随便看	revertive control of impulsing revertive control system revertive error checking revertive impulse revertive impulse circuit revertive impulse control revertive impulsing revertive impulsing circuit revertively revertive pulse revertive pulses revertive pulse signaling revertive pulsing revertive pulsing circuit revertive ringing revert metallics reverts to revert to Revert to a former policy Revert to an old subject revert to its original position revert to level flight revert to love-all revert to saved revert to sb