rock drill steel

常見例句

In this article, Rock Drill, Drill Steel, Bit and Rock have been carefully studied as a whole system.
以鑿巖機、釬桿、釬頭及巖石作為一個整體系統(tǒng)進行了細致的研究。
In order to enhance the service hfe of hollow steel for rock drill stem, the odd number side section shape hollow steel has been designed.
為了提高鑿巖釬桿用中空鋼的使用壽命，設(shè)計了奇數(shù)邊截面形狀的中空鋼。
Through the shallow hardening treatment, the steel T8A can have better contact-fatigue resistance to the repeatedimpactload-test and can be used for making the piston of rock drill.
經(jīng)薄層硬化的T8A鋼，可以獲得較好的多沖接觸疲勞抗力，故有可能作為鑿巖機活塞用材。