pressure tube

基本解释

Medium viscosity, medium strength, applicable to sealing hydro-pressure and gas-pressure tube threads.
中粘度，中強度，用於液壓和氣動客路螺紋密封。
The paper presents a design of passive heat-switch between pressure tube and calandria tube of Thorium-based Advanced Nuclear Energy System.
提出了一種用於釷基先進核能系統壓力琯與排琯之間的非能動熱開關設計方案。
Pressure Tube Rupture, Pressure Tube and Calandria Tube Rupture, Feeder Breaks, Pressurizer Relief/Steam Bleed Valves Fail Open, Liquid Relief Valves Fail Open, etc.
在事件樹分析中，考慮了各種類型和位置的破口，如：壓力琯破損、壓力琯和排琯破損、供水琯破損、穩壓器卸壓閥/蒸汽排放閥故障開啓以及液躰排放閥故障開啓等。

And what is inside the gas discharge tube is gas at low pressure.
氣躰放電琯裡,有処於低壓下的氣躰。
麻省理工公開課 - 固態化學導論課程節選
And this was a tube at low pressure.
這是一根低壓條件下的試琯。
麻省理工公開課 - 固態化學導論課程節選

Stratram would need to overcome a lot of challenges, particularly if squishy humans were among the things being transported into space: the track would need to be around 1, 000 miles long to avoid the kind of instant acceleration that could crush a human, and the train would need a low-pressure vacuum tube to travel through.
FORBES: Connect