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Author:
Journal / Book Title:
Year:
Volume:
Issue:
shi yong fei zuan zuo zuan li zuan tou
Pages:
24
Year:
1958
Issue:
20
Journal:
Geology and Prospecting
Keyword:
钻头
;
技术革新
;
勘探队
;
钻粒
;
制造
;
永德
;
生产试验
;
现象
;
利用
;
钻杆
;
Abstract:
<正> 一○五勘探队杨永德同志在技术革新中,利用废钻杆制造了一批钻粒钻头.经生产试验证明完全可以保证钻进,解决了钻头供不应求的现象,大大的节约了钢材.
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