Through the analyses of several radiator household heating system forms, this paper states that that household heating design should adopt double pipe system.
本文通过对散热器分户供暖几种系统形式的分析，阐明了在分户供暖设计时宜采用双管水平同程序系统形式。
On the base of both consideration of heat transfer performance and resistance, the optimization and research are carried out on single spiral duct double pipe condenser.
本文在综合考虑传热性能和摩擦阻力等因素的基础上，对单螺旋槽套管式冷凝器的结构进行了优化和研究。
This Paper conducted a pilot study by the following three areas:Firstly, pressure fluctuation experiments of UPVC single pipe, double pipe under the steady pressure condition were conducted.
本文主要进行了以下三方面试验研究：第一，稳定压力下UPVC普通单立管、双立管压力波动的模拟试验。
Based on a certain engineering project, the design and construction technology of double pipe and double liquid grouting method for leak blockade in deep excavation retaining structure are introduced.
在深基坑围护结构中采用双管双液法注浆工艺堵漏的设计及施工工艺，工程实践证明是成功的。
Thee main products are: all kinds of diamond drill bits, PDC bits, casing boots, reaming, single and double tube wireline coring drilling, coring drill pipe, casing and other drilling tools.
主要产品有：各类金刚石钻头、复合片钻头、套管靴子、扩孔器、单双管绳索取芯钻具、绳索取芯钻杆、套管及其它钻探工具。
It is shown that the ground settlement produced by middle zone is greater because of double disturbance during parallel pipe jacking construction.
分析表明，水平平行顶管施工时由于中间区域受到双重扰动，会产生较大的地面沉降。
It shows that the ground settlement produced by middle zone is greater because of double disturbance during parallel pipe jacking construction.
研究结果表明，水平平行顶管施工时中间区域受到双重扰动，产生的地面沉降较大。
The structure and principle of jty-1 type air reduction pressure valve for double wind pipe of installation in the raising speed locomotive are described.
介绍了安装在提速机车上专门用于列车双管供风的jty—1型空气减压阀的结构和原理，并介绍了使用、检修及常见故障的处理方法。
The paper discussed the application of tube still preheater and double-pipe preheater in the process of removing silicon, and analyzed the situation of the scab.
本文就列管预热器和套管预热器在粗液脱硅过程中的应用进行了论述。并对其结疤状况进行了分析。
The double radius hole type was commonly adopted for the forming machine of straight weld pipe with vertical roller in domestic present.
目前，国内带有立辊组的直缝焊管成型机大都采用双半径孔型。
However, we can be more efficient, and as we'll see, we won't need the array property in the pipe implementation, and we won't need a workaround for the double change detection.
不过，我们可以更加高效，正如我们所看到的，我们将不再需要在管道实现数组属性，我们将不再需要一个解决办法的双重变化检测。
According to double radius method and edge bend method, this paper introduces the design theory of roll pass with opposite direction bend in middle part for cold forming of round pipe.
本文在双半径法和边缘弯曲法的基础上，介绍了一种冷弯圆管的中部反向弯曲孔型设计理论。
Based on the features of this double-pipe system, the working principle and variation of operation parameters were discussed.
根据双套管系统特点对其原理、操作参数调整变化进行了说明。
Numerous jet fuel monitoring facilities for buried double wall pipe systems dating from the late 1980's to the present.
的翻译是：许多航空燃油监测设施的双墙埋管系统可追溯至1980年代后期到现在。
The meter takes the double wave pipe structure, the two parallel pipe separate fix in "I" bracket.
仪表采用双波纹管结构，即两只波纹管分别安装在“工”字型支架两侧的对称化置上。
Double layer coiling welded pipe is widely applied and demands high quality. It must carry out 100% inspection.
双层卷焊钢管应用广泛，品质要求高，必须进行100%检测。
Detailed measurements were made in a pipe flow for single and double orifice cases by using: this system.
应用该系统详细测量了单孔板和双孔板管流的轴向和径向平均速度。
The invention relates to a double helical ribbon pipe type reactor, which is particularly suitable for preparing high-performance polyacrylonitrile-based carbon fiber spinning solution.
本发明涉及一种双螺带管式反应器，尤其适用于高性能聚丙烯腈基碳纤维纺丝液制备。
The processing, production equipment, main technical points and dosage design of double wall corrugated PVC pipe are introduced, and the results of faults and its solutions in production are analyzed.
介绍了生产聚氯乙烯（ PVC）双壁波纹管的工艺流程、生产设备、工艺控制要点及配方设计，分析了生产中出现故障的原因，并提出解决措施。
The double lift pipe catalytic cracking process and apparatus for modifying inferior petrol in petroleum processing aims at reducing the olefin content and sulfur content in petrol greatly.
本发明公开了石油加工过程的一种改质劣质汽油的双提升管催化裂化方法 及装置，主要用于解决采用现有技术所生产的汽油烯烃含量或硫含量下降幅度 不大的问题。
Spiral welded pipe is a strip coil as raw material, often warm extrusion molding, to automatically double-wire submerged arc welding process double-sided spiral welded pipe joints.
螺旋焊管是以带钢卷板为原材料，经常温挤压成型，以自动双丝双面埋弧焊工艺焊接而成的螺旋缝钢管。
The local phase distribution characteristics of oil and water two-phase flow through a vertical upward pipe are studied experimentally using a double-sensor conductivity probe.
应用双头电导探针测量系统，对垂直上升管内油水两相分散流局部相分布特性进行了系统测量。
The pipe string includes double hydraulic cylinder with anchorage packer, double hydraulic cylinder without anchorage packer, releasing tool, reversing valve and centralizer.
该工艺管柱主要由双缸液压锚定封隔器、双缸液压无锚定封隔器、液压丢手工具、换层开关、扶正器等工具组成。
It reviewed the key points of processing technique and equipment for plastic double-walled corrugate pipe at home and abroad.
论述了国内外塑料双壁波纹管成型工艺和成型设备的技术要点。
The hydraulic results of spare structure with single connecting pipe and double connecting pipes of calculating pipe network under limited-heating supply state are analyzed.
结合算例管网，分析了单连通管和双连通管管网结构在限额供热工况下的水力工况；
Analysis was made of several factors leading to occurrence of decomposition in production of PVC-U double-wall corrugated pipe and some manufacture experience was introduced.
分析了影响PV C - U双壁波纹管生产中出现焦料问题的几种因素，并介绍了一些生产经验。
Pipe which has been checked for holidays at the double-joint yard shall be re-checked prior to installation in the trench.
双面漏涂检查过的管子在下管沟安装之前再次检查一遍。
The colonoscope rack setting auxiliary passage pipe is one double cavity passage pipe with elliptic cross section.
本发明是由一个双腔体的通道管组成，所述的双腔体通道管其截面呈非对称性椭圆形。
Aiming at each process characteristics of the production, it has adopted different controlling models and formed a set of the production quality control system of PVC-U double-wall corrugated pipe.
针对PV C - U双壁波纹管生产线的各个工序特点，采用不同的控制模式，形成了一套PV C - U双壁波纹管生产质量控制系统。
Aiming at each process characteristics of the production, it has adopted different controlling models and formed a set of the production quality control system of PVC-U double-wall corrugated pipe.
针对PV C - U双壁波纹管生产线的各个工序特点，采用不同的控制模式，形成了一套PV C - U双壁波纹管生产质量控制系统。
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