When touching water, the water shutoff agent will swell. In high concentration brine, the expansion ratio is yet higher.
该堵剂遇水会膨胀，在高矿化度水中膨胀率也较高。
2
This paper discusses thoroughly the extrusion swell phenomenon and mechanism of polymer melts in conical die with different entrance angles and different ratio of length to diameter.
深入讨论了聚合物熔体在不同长径比、不同角度圆锥口模的挤出胀大现象及机理。
3
The grafted T/C fabric can swell at once when it reached water. Higher the graft ratio is batter the responsive intensity is and faster the responsive speed is.