短語詞組短語coal column machine head 煤棒機機頭column n head 柱頭;柱帽column cap head 柱頭flared column head [建]漏鬭式柱頭column head pressure 柱頭壓flared d column head 漏鬭式柱頭expanded column head 擴頭柱column head sampling 柱頭進樣water column head 水柱高度 返回 column head