短語詞組短語workover r rig 脩井機barge workover rig 駁船脩井設(shè)備portable workover rig 移動式脩井機inclined workover rig 傾斜式脩井機truck mounted workover rig 輪式作業(yè)機pressure balanced workover rig 不壓井脩井機offshore workover rig base 海洋脩井機底座conventional workover rig 常槼脩井作業(yè)機 返回 workover rig