That may raise the price of "paper barrels", but not of the black stuff refiners turn into petrol.
这可能会提高“纸石油”的价格，但并不能提高变成石油的那些黑色原料精炼器的价格。
The main products of kraft paper barrels a day, can be used to install solid, powder, paste and other chemical products, and metal wire, pharmaceutical products, the best containers.
主要产品为牛皮纸桶，可以用来装固体、粉状、浆状等化工产品，及金属线材、医药产品的最佳包装容器。
The factors which influence the firing life of gun barrels have been investigated in this paper from the viewpoint of properties of gun barrel materials.
本文从材料角度探讨研究影响枪炮身管射击寿命的因素。
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