催化剂经活化后可使丙烯腈单程收率提高 2 %～ 3 %。
The single-pass yield of acrylonitrile increased by 2%~3% after the catalyst reactivation.
经活化指数测定，改性后的重晶石矿物表面的疏水性得到了明显改善；
The effect of the surface modification of barite power was characterized by activity index and FTIR. The activity index indicated that modified barite power has a better hydrophobicity.
经活化的粉煤灰用作水泥混合材可提高水泥标号或水泥中粉煤灰的掺量。
The activated fly ash, when used as cement blend, can either improve the quality of the cement or heighten the ratio of fly ash in the cement.
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