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- Pneumatic hammer drilling technology with low wob,low rate of revolution and high capacity to break rock is one of the best effective methods to solve the problems of hard rock drilling. 空氣錘鑽井是一種低鑽壓、低轉速、高衝擊破岩迴轉鑽進技術,它兼容了氣體鑽井和衝擊迴轉鑽井的優勢,其機械鑽速一般比迴轉鑽井高,是當今解決硬岩鑽井難題的一種有效方法。
- Inserted diamond bit applied to hard rock drilling in Xinji Mining Area 孕鑲金剛石鑽頭在新集礦區堅硬岩層鑽進中的應用
- Lately they have been getting into hard rock. 近來他們一直熱衷於演奏硬派搖滾。
- Application of Rotary Rig in Hard Rock Drilling for Foundation Project of One Power Station 旋挖鑽機在某電廠樁基工程硬岩地層中的應用
- The Application of the Hard Rock Drilling Technique with Large Diameter in Chinese Continental Scientific Drilling Engineering 大口徑硬岩鑽探技術在中國大陸科學鑽探工程中的應用
- hard rock drilling technology 硬岩鑽進技術
- Under the crust are many layers of hard rock. 在地殼的下面是許許多多堅硬的岩石層。
- Hard rock is the real cultural revolution. 搖滾是一場真正的文化大革命。
- Features: rock drilling for opencast mining and quarrying field. 適用於露天礦、採石場開採，用於高低風壓潛孔鑽機。
- Lately they have is get into hard rock. 近來他們一直熱衷於演奏硬派搖滾。
- Lately they've been getting into hard rock. 近來他們一直熱衷於演奏硬派搖滾。
- The rock drill is indispensable for digging coal mines. 鑿岩機是煤炭採掘不可缺少的工具。
- Tina: What about hard rock songs? 蒂娜：那麼搖滾樂歌曲呢?
- You ever heard of a hasidic jew into hard rock? |你聽說過哈西德派猶太人從事硬搖滾嗎?
- If they knew how difficult it was to drill through the hard rock, they would lose heart. 如果他們知道了鑽透那堅硬的岩石有多麼困難,他們會喪失信心的。
- She made herself as comfortable as the hard rock permitted. 她在堅硬的岩石上儘可能坐得舒服些。
- However, the SEP in diamond rotary drilling was higher than the SEP in percussive drilling in lightly weathered hard as well as in extremely hard rock. 在微風化的堅硬與極堅硬岩石中，金剛石旋轉鑽進比功則明顯高於衝擊鑿碎比功。
- The boy has been chipping away at that hard rock for four hours. 那小夥子鑿削岩石已經四個小時了。
- LHS Rock Tools CO.,LTD-Rock tools,Rock drills,Rock drilling ... 遼寧葫蘆島蓮花山鑿岩釺具有限公司（LHS）生產優批發、蓮花山鑿岩.
- In the 1970s, groups played hard rock and punk music, instead. 而到了70年代，樂隊開始演奏重金屬和朋克音樂。
