The gas, water, and other impurities (known as basic sediment and water) must be removed before selling the oil. This separation process is called oil treating.
在原油销售前，气体、水和其它杂质必须脱除(水和其它杂质统称底部沉积物和水)，这种分离过程称为原油处理。
Despite this attention; only modest progress has been made in the basic understanding of the bed phenomena and their relation to sediment movement.
尽管受到注意，但床面现象及其对泥沙运动的关系的基本理解却仅有不太显著的进步。
Five basic problems, which relate with sediment transport, have been discussed.
探讨了与泥沙运动有关的五个基本问题。
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