This is addressed by the "double pipeline" model.

这就是double pipeline模型。

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The economical model of pipeline insulation is divided into single layer structure and double layer structure types.

保温管道的经济模型分为单层结构和双层结构两种。

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Then in chapter 3, the multilevel assessment system of residual strength of corrosion pipeline is introduced on the base of API579 and double shearing yield strength principles.

然后在第三章主要基于API 579准则，以双剪屈服条件为基础，进行了油气长输腐蚀管道剩余强度分级评价技术的叙述。

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He also made long-term deals with the best-performing suppliers and managed to double the number of models in Chrysler's pipeline while cutting the product development budget by 40%.

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He has sent a bill to Congress that would allow the sale of majority stakes in state companies, and wants private investors to build a long-needed new oil pipeline, which might allow oil output to double.

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Oil put a brief double top in on Thursday as it pushed through and failed on that pipeline explosion report.

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