the operation, should avoid high voltage line and elevated grid, to ensure the pile machine drill stand erect not be affected.
作业时,应避开高压线路及高架电网,以保证按桩机鉆架的架设不受影响。
in this article have been shown the results of experimental research, completed at diamond drill stand in irkutsk college of technology, when drilling granite-porphyry.
本文阐述了在苏联伊尔库茨克工学院金刚石鉆进试验台上鉆进花岗斑巖时取得的试验研究结果。
the drill stand has two 5「 wheels for easy portability.」