Vary regularity of each characteristic parameter with changes of frequency, ample and pre-pressing are investigated. Performances of LDSI and DSI are compared.
This paper discussed the advantages about pre alloy power, and studied the technology for making pre alloy power. The performances of pre alloy power diamond bits were given.
讨论了预合金胎体粉末的优点，研究了预合金胎体粉末的制备技术，列举了预合金胎体金刚石钻头的应用效果。
3
In this paper the application and recent developments of heap leaching technology abroad are pre sented, and the main technological and economic performances of heap leaching operations are listed.