Top tension risers (TTRs) are used as the conduits between dynamic floating production units and subsea systems on the sea floor, for drill, complete or production facilities.
顶部张紧立管（TTR）是用于连接运动的浮式生产设施和海床上的海底系统的管道，顶部张紧立管可用于钻井、完井及生产。
Petroleum and natural gas industries - Design and operation of subsea production systems - Part 1: general requirements and recommendations.
石油和天然气工业。海底作业系统的设计和操作。第1部分：一般要求和推荐标准。
The result shows that, this area develops several sedimentation systems including alluvial fan, fan delta, subsea apron, delta, channel and lake and volcanic rock body.
结果表明：该区下白垩统主要发育冲积扇、扇三角洲、水下扇、三角洲、河道、湖泊等多种沉积体系及火山岩体。
Thermal insulation coating systems for subsea pipelines can be classified as single and double-steel pipe insulation systems.
海底管道保温结构通常分为单重和双重钢管保温结构。
The RP is widely referenced for the qualification of fittings and systems used for pipeline subsea repair and/or modifications and tie-ins.
RP作为参考，广泛用于海底管道和接口的维修/修改的配件质量鉴定中。
The RP is widely referenced for the qualification of fittings and systems used for pipeline subsea repair and/or modifications and tie-ins.
RP作为参考，广泛用于海底管道和接口的维修/修改的配件质量鉴定中。
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