环焊缝强度匹配是天然气管道研究与应用的热点问题。
The strength mismatch of girth weld is a concerned problem of study and application of pipeline.
在最后的部分中，您开始研究如何创建更复杂的处理管道，它可以用作未来项目的模型。
In the final section, you began to explore creating a more complex processing pipeline that can serve as a model for future projects.
科学家表示：研究证实了蚂蚁建造特殊结构的通风管道和将土挖掘到别处是完全不一样，那是另一个蚂蚁类物种的技术。
The scientists said the research confirmed that ventilation turrets were 'built structures' as opposed to passive deposition of excavated soil, a technique used by other ant species.
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