短语词组短语coal -ash transportation engineer 输煤出灰工程师original coal -ash 原状粉煤灰Garlic coal -ash spot 第六节pulverulent coal -fired ash 细化粉煤灰dredger fill pulverized -coal-ash 吹填粉煤灰pulverized -coal-ash pile 粉煤灰桩 返回 coal ash