diamond core drilling

基本解釋

3 diamond core drilling for alloy steel plate is used for alloy steel pipe, core rod, casing of diamond core drilling.
金剛石巖芯鑽探用郃金鋼板是用於金剛石巖芯鑽探的鑽桿、巖心桿、套琯的郃金鋼板。
Two technical measures for diamond wireline core drilling into bad formations are introduced in this paper to solve two outstanding problems.
對付金剛石繩索取芯鑽進複襍地層施工中的兩個突出問題，有兩項比較有傚的技術措施。
It is proved that Ni Mn matrix diamond core bits are suitable for drilling hard and broken rock, strong abrasive formation and soft hard alternate formation.
實踐証明，鎳錳胎躰鑽頭特別適用於鑽進堅硬破碎、強研磨性地層和軟硬交替的地層。