共 50 条
- [3] SOME APPLICATIONS OF GUN DRILLING FOR PRODUCING ACCURATE HOLES OF VARIOUS DEPTHS MACHINERY AND PRODUCTION ENGINEERING, 1970, 117 (3015): : 337 - &
- [10] EFFECTIVENESS OF EXPLORATORY DRILLING IN GREAT DEPTHS IN US ZEITSCHRIFT FUR ANGEWANDTE GEOLOGIE, 1969, 15 (01): : 43 - &