摘要
简要介绍了我国伞形钻架的发展过程和目前水平。对我国伞形钻架今后的发展方向提出了建议。
Here the paper deals with a brief introduction of the historic development and the level having been reached of umbrella masts in China, and offers proposals for direction of developing this kind of masts.
出处
《矿山机械》
北大核心
1990年第12期10-12,共3页
Mining & Processing Equipment
