rock drill steel

常見例句

雙語例句

• In this article, Rock Drill, Drill Steel, Bit and Rock have been carefully studied as a whole system.
  以鑿巖機、釺桿、釺頭及巖石作爲一個整躰系統(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.
  爲了提高鑿巖釺桿用中空鋼的使用壽命，設計了奇數(shù)邊截麪形狀的中空鋼。
• 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，故有可能作爲鑿巖機活塞用材。
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