单词 | riser |
释义 | riser [`rīz·ǝr] CHEMICAL ENGINEERING That portion of a bubble-cap assembly in a distillation tower that channels the rising vapor and causes it to flow downward to pass through the liquid held on the bubble plate. CIVIL ENGINEERING 1. A board placed vertically beneath the tread of a step in a staircase. 2. A vertical steam, water, or gas pipe. GEOLOGY A steplike topographic feature, such as a steep slope between terraces. METALLURGY See <<feedhead>> PETROLEUM ENGINEERING In an offshore drilling facility, a system of piping extending from the hole and terminating at the rig. TEXTILES A raised spot in a weaving pattern where the warp traverses the weft or the filling. |
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