The test results showed that this agent had a good plugging effect for water layer and no damage for oil layer and oil-water mixed layer.
试验表明，该堵剂对水层有较好的堵塞效果，不损害油层和油永混合层。
2
The mixed gas-liquid centrifugal dust-removing filter with reasonably designed gas-filtering layer and suitable packing material has remarkable dust-removing effect.