短语词组短語coal -ash transportation engineer 輸煤出灰工程師original coal -ash 原狀粉煤灰Garlic coal -ash spot 第六節pulverulent coal -fired ash 細化粉煤灰dredger fill pulverized -coal-ash 吹填粉煤灰pulverized -coal-ash pile 粉煤灰樁 返回 coal ash