And while skin cells contain more squalene than cholesterol, the researchers found the opposite ratio in dust.
虽然表皮细胞中鲨烯的含量往往高过胆固醇的含量，但是研究人员在灰尘里发现了两者相反的比例。
Filtration coefficient ratio depends mainly on the air dust and the content of solid particles.
过滤系数比值主要取决于空气中灰尘和固体颗粒的含量。
Through a year operation, it is stated that the Operational performances of this unit is stable and reliable and the ratio of dust precipitation is increased from 90% to 98%.
运行结果表明，该设备工作性能稳定可靠，除尘效率有了明显的提高，由原来的90％提高到98％。
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