n. downcomer
misc. downcomer-pipe
地下导管 underground conduit
下导管动脉栓塞术 transcather arterial embolization
乳晕下导管乳头状瘤病 Subareolar duct papillomatosis
下套管导引工具 casing snubber
双模块驳载下水导管架 two-piece barge-launched jacket
单模块驳载下水导管架 single-piece barge-launched jacket
埋于地下的导管系统 Conduit systems buried underground
导管架下水 jacket launching
地下导水管 underground aqueduct
研究了不同情况下导管内填充多孔介质中的流速、气固温度和压力分布。
The distribution of gas velocity and its pressure, the temperature field of gas and solid in the moving particle bed are calculated at different conditions.
建立了地震作用下导管架海洋平台结构优化的数学模型，把导管架海洋平台看作钢框架结构，并把优化方法用于结构的抗震设计中。
Jacket platform was assumed as steel frame structure and optimum design method was performed. Total weight of the structure was selected to be optimal objectives.
在医院的心导管检查室里做这种检查在大多数情况下是得不到预期效果的。
Most of these exams, done in hospital cardiac catheterization labs, turn out negative.
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