This could be the feel-good movie of the autumn.这可以称得上是今秋令人赏心悦目的影片了。See our selection of autumn favourites and take your pick.看看我们的秋季精选，然后挑出你想要的。Gucci will be holding fashion shows to present their autumn collection.古奇将举...
The main copper minerals are malachite, chrysocolla, little chalcopyrite, chalcosine and even little bornite and covellite.矿石主要含铜矿物为孔雀石 、 硅孔雀石, 少量的黄铜矿 、 辉铜矿及极少量的斑铜矿和铜蓝等....
本文研究了无造渣剂等矿石粉的耐磨堆焊电焊条.An overlay welding electrode without mineral powder as, slag forming medium, etc.介绍了用高碳铬铁渣做造渣剂冶炼锰硅合金的生产实践.The practice of smelting ferromanganese silicon with slag of high carbon ferrochrome is intr...