waste pitch是什么意思

【专家解说】：waste pitch un.弃球 暴投 例句 1.Co-carbonization of coal and pitch and waste plastics shows that pitch only plays the adhesive role which holds coal particles together. 贫煤与沥青及废塑料三者的共焦化实验表明，沥青仅起到把不同的煤颗粒粘结在一起的作用。 2.Study on Slagging in Pitch Coke Waste Heat Boiler Tubes 沥青焦废热锅炉炉管结渣问题的研究 3.A new method to avoid white pitch deposition from waste coated paper 防止回用涂布纸浆中白树脂沉积的方法 4.Preparation of Modified Petroleum Pitch by Using Waste High Molecular Materials 利用废旧高分子材料制备改性石油沥青