乌金

dà tóng zhè ge dì fang yóu yú shèng chǎn wū jīn ér wén míng

大同这个地方由于盛产乌金而闻名。

Da Tong is famous for its rich coal reserves.

běn wén tōng guò duì mǒu gāng tiě gōng sī gǔ fēng jī wǎ fā shēng wū jīn suì liè de yuán yīn jìn xíng fēn xī chǎn shù le suì wǎ gù zhàng de jī lǐ

本文通过对某钢铁公司鼓风机瓦发生乌金碎裂的原因进行分析，阐述了碎瓦故障的机理。

This paper takes the Air Blower of Baotou Steel and Iron Company as an example to explain the principle of the bearing pad crashing by analyzing the failure cause of No.1 bearing Babbit Alloy.