trepanner

常见例句

• By improving the BTR1-PST286 wish single sucperd hydraulie trepanner made in Germany.Realize adjustable of electric line.preventing accidents of electric line or stecly line fall down.
  通过对新引进的全德国制造BTR1-PST286液压钻车配套单轨吊技术改造,实现电缆的自拉自收,避免了电缆拉脱或起吊钢丝绳拉掉事故的发生。
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