汽油加氢装置运行难度大，需在生产中摸索经验。

The operation of coking gasoline hydrogenation plant is difficult.

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要仔细地考虑，认真摸索出一种经验。

Think about it and craft an experience.

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由于在这方面没有经验，我们必须摸索着前进。

Without experience on it, we have to feel our way.

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摸索了对外合作、合资的经验。

Explore the external cooperation, joint venture experience.

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摸索了对外合作、合资的经验。

Explore the external cooperation, joint venture experience.

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