waste coal product的意思|示意

He was attempting to manufacture quinine from aniline, an inexpensive and readily available coal tar waste product.

他试图用苯胺批量制造奎宁，苯胺是一种廉价且容易获得的煤焦油废料。

Due to the fact that the unreasonable product structure affects the economic benefit of the mine, and caus the waste of coal resources.

由于产品结构不合理影响全矿经济效益，造成煤炭资源的浪费。

Large amount of poisonous gas, coal and waste rocks badly influence the safe product for coal mine, and also cause the economic loss to our country.

煤与瓦斯突出产生大量的煤与矸石和有毒的瓦斯气体，严重影响煤矿安全生产，给国家造成或大或小的经济损失。

Phosphorus-gypsum is a by-product of phosphoric acid and some Compound Washing product industry . Powdered coal ash is a kind of powder which collected from waste gases of coal ash boiler .

磷石膏是磷酸工业和某些合成洗涤产品工业的副产品，粉煤灰是在煤灰锅炉废气中收集下来的粉末。