The cerusite can be collected by xanthate without sulfuration, however the flotation indexes are not good.在不硫化的条件下,黄药能够浮选白铅矿, 但浮选指标不高.Expounds liquid level control system of flotation machine and its industrial test.介绍浮选...
At the time he was said to be very much Rajiv Gandhi's man.据说他当时是拉吉夫·甘地的铁杆支持者。Rajiv Gandhi is believed to have been killed by a bomber.据信拉吉夫?甘地是被一名投弹者杀死的....the Rajiv Gandhi Foundation which promotes cultural and ed...
我们好不容易才扭转了这场比赛的败局.We just managed to pull the game out of the fire.加拉赫似乎自知败局已定,开口就没好气.Gallagher was truculent as though he knew he were going to be beaten.舒利亚后备入替仍未能挽回败局,球队卒以一比二落败.Shearer came on later but could not prev...