Then why did you invite a friend for su er?

那你为什么还要邀请朋友回来吃晚饭？

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Su-131 block and Bei-301 block in Hai-la-er Oilfield are main producing area, and they have features of acid sensitivity and water sensitivity respectively.

海拉尔油田苏131、贝301区块试验区是海拉尔油田的重要产区。 其储层分别表现为强酸敏以及强水敏的特性。

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