copper metallurgy

常見例句

Because of economic system and market demand changing, lots of problems have appeared in the developing process of copper metallurgy city.
但是由于市場(chǎng)需求、經(jīng)濟(jì)體制的變化和資源枯竭的原因，銅冶金城市在發(fā)展過程中出現(xiàn)了很多問題。
Yan-culture is centered around Beijing region, where every stage of the evolution of copper metallurgy was probably undertaken during 2000 years history.
以北京地區(qū)為核心的燕文化近兩千年的發(fā)展歷程可能經(jīng)歷了冶銅技術(shù)演化的各個(gè)階段。
Copper metallurgy city is one kind of a large number of resource-based cities that China owns. They have played an important role in economic development of our country.
我國擁有數(shù)量眾多的資源型城市，銅冶金城市是其中的一種，對(duì)我國經(jīng)濟(jì)的發(fā)展起著舉足輕重的作用。