10分钟后剩余的物质被冲洗掉，任何残留的沉淀物则会用紫外线进行检测。
After 10 minutes the surplus material is washed away and any remaining deposit examined with ultra violet light.
如何经济有效地开采水驱开发后残留在地层中的60 ~ 70%的剩余油，已成为世界各国油藏工程专家努力攻关的课题。
How to exploit the residual oil in the stratum efficiently after water flooding, which accounts for 60 ~ 70% reserves in place, is a main task of petroleum engineering experts the entire world.
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