熔炼期
it made an approach to how to retard the speed of the furnace bottom' s build-up and to prolong the ca-si smelting period.
本文就如何减缓炉底上涨速度,延长硅钙冶炼周期作了探讨。
The brickmaking , smelting, china, filature , weaving and such handiworks had appeared early in the Ming Period.
早在明代就有制砖 、 冶坊 、 陶瓷 、 缫丝 、 织布等手工业.
The handicraft industry of the Warring States Period also got a rapid development with the significant technology improvement in iron-smelting, bronze wares casting, lacquer and cloth-weaving.
战国时,手工业大大发展。冶铁、青铜器铸造、漆器、丝织业的生产水平都有显着的提高。
英语网 · 双语娱乐资讯
英语网 · 初中英语作文
英语网 · 英语词汇
英语网 · 初中英语语法