1. Experiment shows that to polyether initiator, crude emulsion breaking has definite selectivity. 试验证明：原油破乳对聚醚引发剂有一定的选择性。
2. The contamination of soil by crude oil is a growing problem as China accelerates its exploitation of oil reserves to meet rising energy demands. 随着中国加速开采其石油储备从而满足日益增加的能源需求，原油污染土壤越来越成为一个问题。
3. In order to avoid change without expectation. we should do some compatibility experiments about well fluid , the oil layer, the crude oil and the oil layer water. 防止油层伤害最基本的方法是做入井流体与油层、原油、油层水配伍性实验，避免油层发生不期望的变化。
英英解释
n.
1. a dark oil consisting mainly of hydrocarbons
2. not carefully or expertly made
3. conspicuously and tastelessly indecent
4. not refined or processed
5. belonging to an early stage of technical development; characterized by simplicity and (often) cruden
6. devoid of any qualifications or disguise or adornment
7. not processed or subjected to analysis
