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- In this paper, the heat transfer performance of foed convective Condensation and the heat transfer enhancement mechanism on the petal shaped fin tube (PF tube) are studied. 本文研究了花瓣形翅片管（PF管）在水平套管之环形通道内强制对流冷凝的传热性能及传热强化机理。
- Heat transfer and pressure drop characteristics of petal shaped fin tube and low finned tube heat exchanger with helical baffles were introduced,in which compressed air folwing in the shell side. 螺旋隔板是强化管壳式换热器壳侧传热十分有效的壳程结构型式。
- Keywords helical baffles heat exchanger;heat transfer characteristics;pressure drop characteristics;Petal shaped fin tube; 螺旋隔板换热器;传热性能;流阻性能;花瓣状翅片管;
- His head Lu decorations from the petal shape using the aquamarine. 他的头部纹饰源自宋瓷上的莲花瓣造型。
- The improved implantation methods is to cut anterior putamina in petal shaped,and free posterior sclera and optic nerve. 其改良植入方法主要是前部巩膜壳切开成花瓣状,同时游离后极部巩膜与视神经。
- A new non-chip cutting-press compound shaping technique of fin tube was presented. 提出了一种新的翅片管无屑切削挤压复合成形方法。
- The shaping process of fin tube and the characteristics of the cutting tools were researched in detail. 对翅片的成形过程和加工刀具的特点进行了研究,建立了翅片尺寸的理论模型;
- The air cooler is designed of nullity fin oval stainless steel bellows tube bank replacing conventional fin tube bank. 空气冷却器采用无翅片椭圆不锈钢波纹管管束替代传统的翅片管管束,是空气冷却器设计制造的技术革新。
- According to which we carried out lots of experiments and find a simple operating testing method of the resilience performance of hanser named petal shape weighting. 在此基础上研究了一种简单可行的对马尾衬布变形回弹性进行测试的一种方法。
- Spirally corrugated and sawtooth-shaped fin tube is a high performance condensation heat transfer tube. 螺旋槽锯齿翅片管是一种新型高效冷凝换热管。
- In this paper, the model for the formation of overlap in extrusion_ploughing for outside fin tube is developed. 建立了挤压犁削加工外翅片管过程中飞边的生成模型，给出了产生飞边的判定准则，并对影响飞边产生的因素进行了研究。
- Established the cooler fin tube production Division in the Utsunomiya Plant for expansion of production. 建立了较凉的翅片管的生产部门，在宇都宫厂为扩大生产。
- Disc, some ovary, only a slight change stigma, Some changes are the ovary and the stigma, petal shapes. 瓣化现象，有的子房不变，仅柱头稍有变化；有的子房和柱头均发生变化，变成花瓣形状。
- The experimental study is described in this paper for the heat transfer and pressure drop of the heating oil exchanger made of three dimensional inside petal helically finned tube. 简要介绍了一种新型的三维内花瓣形螺旋肋管式油加热器的强化传热机理、特点、试验研究情况及在某电厂油系统中实际应用的效果。
- A new method of machining integral fin tubes (IFT), chopping extrusion technique, was presented. 提出了一种新的整体翅片管的机械加工方法,即劈切挤压加工。
- A petal fluttered to the ground. 一片花瓣飘落到地上。
- Small plant with slender bent stems bearing branched clusters of a few white star-shaped flowers with petals shaped like cat's ears; southeastern Washington and northeastern Oregon to Montana. 一种小型植物，细的、弯曲的茎干长着枝条，其枝条上长着几朵白色的星形花，其花瓣形状类似猫耳；生长于华盛顿东南部和俄勒冈东北部至蒙大拿。
- high frequency welded spiral fin tube 高频焊接螺旋翅片管
- duplex continuous integral fin tube 双金属套片式翅片管
- The economy should be shaped to a new pattern. 经济应该适合于一种新的模式。
