盘管的标准型式均为铜管串铝翅片结构，采用机械胀管。表冷段设计有倾斜式排水盘，保证彻底排尽水盘中的凝水。
All standard coils are mechanically expanded copper pipes plus aluminum fins. The surface cooling section is equipped with a pitched discharge coil to ensure complete discharge of condensed water.
综述了碳纳米管的结构、制备方法及其潜在的应用领域。着重讨论了碳纳米管在表面工程中的应用方面的研究现状及其进展。
Structure, synthesis methods and the potential application of carbon nanotubes are reviewed in this paper. And its application status and development on the surface engineering are emphasized.
针对管-管节点的几何特征，分析了声波在钢管焊接结构中的传播规律。
It analyzed the transmission rule of sound wave in steel tubular welding construction aims at the geometry of tube-tube joints.
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