真空隔热油管传热性能研究_暖通空调在线 关键词：隔热油管,优化,隔热层, [gap=1131]Keywords：insulated tubing,optimization,heat insulation layer,
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concentric insulated tubing 同心保温油管
heat insulated tubing string 隔热管柱
high vacuum insulated tubing 高真空隔热油管
According to the existing literature, there were some progresses about the study of insulated tubing vacuum test on abroad. some of those methods cost, and some difficult to achieve, some only qualitative measurement, not quantitative measurement.
根据现有的文献检索,国外在隔热油管真空测试领域的研究有了一定的进展,但这些方法有的成本高,有的难实现,有的只能定性测量,不能定量测量。
参考来源 - 隔热油管真空测试系统研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The vacuum insulated tubing is one of the main facilities that are exploited in heavy oil by the injection of steam.
真空隔热油管是稠油注蒸汽开采的主要设施之一，其隔热性能直接影响热采效果。
The connections of cylinders and caps and tubing generally need to be electrically insulated.
气缸和帽子，油管的连接一般需要电气绝缘。
These lead wires are mated to the switch and receiver lead wires by press-on connectors (10) and are insulated by vinyl tubing (11).
这些引线通过按压连接器（10）连接到电门和接受器引线，并通过乙烯基管（11）绝缘。
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