From the West Indies also come oil, mineral pitch and many forest products.
西印度群岛也有石油、柏油和许多林产品。
2
An alternative method was to use a large shallow receptacle rather than a cauldron; oil, tallow or pitch then being poured in.
另一种方法是不用大锅，而是使用一个大的浅性容器，油，牛油或沥青随后被浇入。
3
The thermal weight loss of asphaltine in the pitch road building oil modified with different additives is studied with derivative thermo - gravimetric analyzer in inert atmosphere.