face-contact造句

• The study on the movability of the face - contacted blocks in overlying strata above the longwall face in datong
  大同采场覆岩面接触块体可动性判定研究
• A new type of joint technique between short _ net copper pipe and soft _ cable connection board , castfusion welding , is introduced . the practice of more than ten years shows that this fusion welding connection has the superiority of higher reliability , simpler processing method , better economy benefit compared to the taper cone face - contacted connection
  介绍了电石炉短网铜管与软缆接线板之间的一种新型连接技术? ?浇铸熔焊技术.经过10多年的运行，实践证明短网铜管与铸铜软缆接线板的浇铸熔焊连接，与传统工艺采用的圆锥面接触连接相比较，具有加工工艺简单、运行可靠性高、经济效益好等优点