The amount of isopentane and water, the kinds of polyethers and catalysts were selected.

对异戊烷及水的用量、聚醚多元醇及催化剂的品种进行了选择试验。

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The amount of isopentane and water, the kinds of polyethers and catalysts were selected.

对异戊烷及水的用量、聚醚多元醇及催化剂的品种进行了选择试验。

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