rock drill bit造句

• Changsha lnstitute of mining research cimr with rich design experiences is the earliest to be engaged in research on downhole drilling tools and rock drill bits in china and has carried on the work more than 25 years
  我公司这次在这次展览会上展出了cs165 , cs100d , cs100l和潜孔钻机，并进行了高压水射流技术的介绍和推广工作。产品的技术领先得到了很多公司的认同。
• Since 1972 , j series hammers and various rock drll bits have been developed , among them two products have won the prices of the national science conferences and fourteen products obtained scientific and technical achievement prices from the metaillurgy , ministry . all the products have been widely used in metal , coal , and industrial mineral mines , hydroelectrie construction sites and sold to the foreign markets as well . cimr machinery plant is a department responsible for trial - producing , manufacturing and marketing the research achievements of cimr , it has started manufacturing hammers and rock drill bits since 1958
  在与tanhoanganh公司主要代理建筑和工程机械总经理nguyen huy huyen的交流过程中，当我们谈到cs165智能整体型一体化液压潜孔钻机可钻凿100m深的孔，能把偏斜率控制在1 %以内，整个凿岩过程在定位完成后自动完成，并配备了双动力驱动系统时，他举起大拇指，大呼“ powerful