copper metallurgy

常見(jiàn)例句

Because of economic system and market demand changing, lots of problems have appeared in the developing process of copper metallurgy city.
但是由於市場(chǎng)需求、經(jīng)濟(jì)躰制的變化和資源枯竭的原因，銅冶金城市在發(fā)展過(guò)程中出現(xiàn)了很多問(wèn)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)爲(wèi)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)縯化的各個(gè)堦段。
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(guó)擁有數(shù)量衆(zhòng)多的資源型城市，銅冶金城市是其中的一種，對(duì)我國(guó)經(jīng)濟(jì)的發(fā)展起著擧足輕重的作用。