The plug-up of the crude oil gathering line due to wax condensation is a common trouble occurring in the oil field.

油田集油和输油管线冻（凝）堵是油田生产常见故障之一。

youdao

Based on the flow mechanism and performance of gas liquid two phase plug flow in oil gas gathering line, a slug unit are divided into both gas slug region with liquid film and liquid slug region.

针对油气集输管线中气液两相团状流的流动机理和特点，将每一段塞单元划分为带液层的气塞区和液塞区两个区域。

youdao

Its assessment is in line with a landmark study in late 2005, "Rising Above the Gathering Storm," by the National Academies, the nation's leading science advisory group.

它的评估呼应了2005年年底具有里程碑意义的研究报告《站在风暴之上》，该报告出自美国顶尖的科学咨询团体——美国国家科学院。

youdao

However, the Czechs were soon back in command and coming closer to a breakthrough, with McGregor gathering on the line after a combination of Hubnik and Gary Caldwell diverted a cross into the six-yard box towards goal.

BBC: Czech Republic 1-0 Scotland

On marathon day, they joined a group of close friends who had met at Stoneham High School, gathering near the finish line to cheer another friend, a firefighter from Somerville, Mass.

WSJ: In Boston, Families Grapple With Long Road Ahead

The ball was spread across the back-line with a huge overlap awaiting the eager Jones, but the final pass was behind the wing, and after gathering he barely sneaked over the line, his try finally awarded by the television match official.

BBC: Scarlets 22-29 Harlequins