| 单词 | riser |
| 释义 | riser (raɪzəʳ ) Word forms: risers 1. countable noun An early riser is someone who likes to get up early in the morning. A late riser is someone who likes to get up late. He was an early riser and he would be at the breakfast table at seven. 2. countable noun A riser is the flat vertical part of a step or a stair. [technical] Collocations: riser pipe The previous cap over the well's riser pipe was ill-fitting. Times, Sunday Times As it spewed up the riser pipe and engulfed the platform, alarms rang out and explosions began to tear the rig apart. Times, Sunday Times Instead of burning, emergency workers are relying on chemical dispersants being injected by submersibles directly into the leaks in the collapsed riser pipe that connected the wellhead to the rig. Times, Sunday Times A narrow riser pipe extends from the air chamber up to the higher elevation to which the water will be pumped. Retrieved from Wikipedia CC BY-SA 3.0 As air accumulates, pressure builds, which will push water up into the riser pipe. Retrieved from Wikipedia CC BY-SA 3.0 |
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