binding coal

基本解释

Coal tar processing is one of the most important areas of coal chemical technology and a main intermediate ring binding coal mining, metallurgy and chemical industry.
煤焦油加工是煤化工的重要内容之一，与煤炭、冶金和化工等行业密切相关，在世界范围内已有相当规模。

According to a statement by Australian Pacific, the exploration arm of Rio Tinto has signed a non-binding letter of intent, wherein the company will undertake the financial and technical risks in examining and estimating the coal reserves and the production potential at the Mt.
FORBES: Rio Tinto Cruises To $97 Digging Coal Down Under