bitumens
n. [材]沥青(bitumen 复数)
例句
Any of various natural bitumens, such as mineral pitch or asphalt.
树脂,自然沥青:某种自然的沥青,如矿石沥青或树脂。
树脂,自然沥青某种自然的沥青,如矿石沥青或树脂。
And the use of this knowledge in exploration and recovery of oil. gas, and related bitumens.
并用此知识于石油、天然气及有关的沥青勘探和开采。