This paper introduces the rehabilitation procedure of PE lined pipeline and stresses on quality control requirement of PE pipe heat melting welding.
文章介绍了内衬PE管修复技术的施工程序，强调了PE管道热熔焊接质量控制要求。
Experimental results show that Quality magnetic alloy 1jha1 can be produced by air induction melting (AIM) and vacuum pouring technologically and economically.
结果显示，采用非真空感应熔炼(AIM方法)加真空浇注生产1 J HA1合金具有工艺上和经济上的可行性。
From quality of melting metal, casting condition and casting equipment, the influence factors of crack in aluminium and its alloy slab ingot were analyzed, some suggestion have been drawn out.
从铝及铝合金的熔体质量、铸造条件和铸造设备三个方面，分析了对铝及铝合金扁锭裂纹影响的诸要素，并提出避免裂纹的措施。
Relation between melting rate and solidification quality and how to obtained the reasonable melting rate is discussed.
讨论了电极熔化速度与凝固质量之间的关系，及如何计算合理的熔化速度。
The quality of solid greases depends on the Crystal polymorphism it is very important to determine the melting point of Crystal polymorphism and it's stable CharaCter.
固体油脂食品的品质优劣取决于同质多晶晶型，所以确定各晶型的熔点及其稳定性是十分重要的。
Adopting rational melting process and proper carbon equivalent as well as inoculation process is the precondition to improve the metallurgical quality of castings.
采用合理的熔炼工艺、选择合适的碳当量及孕育方法是提高冶金质量的先决条件。
Developing special CNC system will enhance machining quality and efficiency of electric melting and explosion machine.
研制专用数控系统，则可进一步提高电熔爆加工机床的加工质量和加工效率。
Specific quality control and methods are introducd in the course of crystal glaze production from the aspect of melting process as far as transparent crystal glaze is concerned.
根据透明水晶釉的特点，从熔制工艺角度分析介绍了水晶釉生产中各个质量控制手段和方法。
Practice proves that soft melting system is running stably, function is reliable, control accuracy is high, meets the need of production process and improves yield and quality of tinning strip.
实践证明，该软熔系统运行稳定，性能可靠，控制精度高，完全满足了生产工艺的要求，提高了镀锡带钢的产品质量和产量。
Resiliconizing problem is usually confronted in the melting process of self - fluxing nickel base alloys in furnace with acid lining, which severely affects the product's quality.
在酸性炉衬中熔炼镍基自熔合金时常出现增硅问题，严重影响产品质量。
It is pointed out that the inclusion content in melting steel and the status of caster play a key role for quality of thin slab.
指出在薄板坯连铸工艺流程中，钢水中夹杂物含量及连铸机工艺设备情况对薄板坯的质量起决定作用。
With requred to the melting of rare metals the major issues are the development of melting technology, assurance of product quality, and increase in production efficiency.
真空自耗电弧炉是熔炼钛、锆等稀有金属的主要工业手段，如何提高熔炼工艺水平，保证产品质量，提高经济效益，已成为稀有金属行业广泛关注的问题。
Melting experiments validate that the content of high temperature form water is the most important factor influencing the quality of the natural quartz.
熔制实验证明：高温水的含量是影响天然石英质量的最主要因素。
Meter pump: The meter pump with excellent quality alloy steel guarantees stable melting pressure and flow.
计量泵：采用优质合金钢材米泵保证稳定的熔融压力和流量。
It is running stably in practical use. All thermotechnical parameters of the melting furnace can be well controlled to guarantee glass melting quality and reduce remarkably energy consumption.
该系统投入生产运行后，性能稳定，熔窑各项热工参数得到稳定控制，保证了玻璃熔制质量，并明显地降低了能源消耗。
The heating value of the natural gas used as the fuel for the glass melting must be accurately controlled to improve the production quality of color TV tubes.
为了提高彩管玻壳的生产质量，要求对做为玻璃炉窑燃料的天然气的热值进行精确控制。
As a new type of line material, red-silica powder can increase the life of furnace liner, assure melting iron quality, reduce production cost.
红硅石作为一种新型的修炉材料，提高了炉衬寿命，稳定了铁液质量，降低了生产成本。
They have found a main reason of poor abrasion resistance of the first cane mill roller is due to its poor casting quality during melting and casting.
找出国产榨辊比外国榨辊耐磨性低的原因主要是铸造与熔化水平低，铸件内在质量差造成的。
The utility model has capability of continuous electric melting production, saved raw materials, energy conservation, and balanced product quality.
本实用新型可连续电熔生产、节约原料、节约能源、产品质量均衡。
How to control the temperature curve to fit with the properties of low melting point glass dust is very important to keep the product′s quality.
怎样依据低熔点玻璃膏的特性，控制一条保证产品质量的温度曲线是保证粘接质量、少出废品的关键。
In order to improve the quality of magnesium billets, magnesium melt for DC casting was purified by using stainless steel mesh in the magnesium melting furnace with bottom apex.
采用在底流式镁合金熔炼炉中施加不锈钢丝网过滤的方法在半连续铸造工艺中实现镁合金熔体净化，以达到提高镁合金锭坯质量的目的。
Advanced domestic and overseas technology is employed, the upper-driving rotating is used. P10 is used for melting, with even, flat and smooth film to ensure quality requirement of the film.
吸收国内外先进技术，采用上牵引旋转，P10控制测温进行熔化均匀，挤出薄膜平整、均匀、光滑，保证薄膜加工的质量要求。
In this article it is stated that the improvement of glass quality can be achieved through setting a proper melting schedule.
通过本单位的实际情况，制定了相应的熔化工艺制度，从而提高的产品了产质量。
The micro energy director can control the flow of the melting-polymer effectively and can obtain the uniform sealing surface and high quality precise sealing.
该种微导能结构有效控制了聚合物熔融流延，获得了均一的封接面，可实现高质量精密封接。
The invention discloses a coal ash melting property determinator, with high reliability and high efficiency, which belongs to a analysis and test device for coal quality.
本发明公开了一种高可靠和高效率煤炭灰熔融性测定仪，属煤质分析测试设备。
Said alloy is high in melting point, stable in quality, non-toxic and safe in use.
该合金熔点高，性质稳定，无毒，使用安全。
Said alloy is high in melting point, stable in quality, non-toxic and safe in use.
该合金熔点高，性质稳定，无毒，使用安全。
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