词汇	narrowband attenuation
释义	narrowband attenuation 选频衰减
随便看	shaft for adjustment shaft for cage winding shaft force shaft for cover close shaft forging shaft forgings shaft for hinged lever shaft formation by longhole blasting Shaft formation by long-hole blasting shaft for reversing coupling shaft frame shaft-frequency electric field shaft friction shaft friction resistance shaft furnace shaft furnace carbonising shaft furnace carbonizing shaft furnace control shaft furnace for pellet firing shaft furnace making sponge iron shaft furnace pelletizing shaft furnace process shaft furnace roasting shaft furnace roasting process SHAFT furnaces