造价

Gas valve body material selection Pressure gas pipeline under the reasonable use of the valve housing material selection, not only palace to meet the safe operation of pipeline and is able to reduce the cost and make the best use for the purpose.

三、燃气阀门的阀体材质选用根据燃气管线的使用压力合理选用阀门壳体材质，既宫满足管线的安全运行又能达到减少造价，物尽其用的目的。

Which fixed plate heat exchanger for both the shell and tube sheet connected into one, simple structure and low cost advantages, Therefore, using the more widely.

其中固定管板式换热器为两端管板和壳体连接成一体，具有结构简单和造价低廉等优点，因此使用较为广泛。

The making of general assembly trolley in large-power diesel engine line not only meets the need of the high-power diesel engine , but also operates simply,moves lighly,costs cheaply,uses safely,and has good comments.

大功率柴油机总装线总装台车的承制，不仅满足了大功率柴油机的总装需要，而且操作简单，运行轻便，造价低廉，使用安全，并受到好评。

The supply of land and give priority to safeguard the "three-room", that is in the low-cost housing, affordable housing and low-cost housing land.

土地的供应，并给予优先保障&三房&，即在低造价住房，负担得起的住房和廉价住房的土地。

The major goal of USB was to define an external expansion bus which makes adding peripherals to a PC as easy as hooking up a telephone to a wall－Jack. The programs driving goals were ease-of-use and low cost. These were enabled with an external expansion architecture.

通用串行总线作为一种新兴的计算机外设总线标准，从标准的出现到大规模的应用，仅用了短短几年的时间，这一切都得益于它易用、真正的热插拔、高性能和系统造价低廉等忧点。

Points out a tentative plan to storage kerosene with inner floating roof tank and gives experience calculation formulae of "big breathing, breathing" losses in vertical dome roof tank and inner floating roof oil tank.

提出了用内浮顶罐装煤油的设想，分别给出了立式拱顶罐和内浮顶油罐&大、小呼吸&损耗经验计算公式，并对内浮顶罐和拱顶罐装煤油时的蒸发损耗量以及两种油罐的造价等进行了对比计算，认为用内浮顶罐储存煤油是经济、合理和安全的，建议新建煤油储罐时应采用浮顶油罐。

The fore bay of Heihe Longhui Hydropower Station designed by the company, is the existing biggest tunnel fore bay in China, which is height of 21m, width of 16m; for the large-span dome of surge tank of Baishuijiang Shiji Hydropower Station, which is the first project equipped with rapid-drop gate in surge tank in Gansu Province, the company adopted pre-stressed anchor cable to complete the dome's excavation and supporting at the same time, thus reduced the completion period and investment; for the diversion tunnel of Fuchuan Hydropower Station, which is the biggest non-pressure diversion tunnel in Gansu Province, with span of 9m, height of 11m, the company adopted half-tunnel supporting structure, thus reduced the project investment.

黑河龙汇水电站前池是目前国内最大的洞内式前池，跨度16m、高度21m；白水江石鸡水电站调压井大跨度穹顶采用预应力锚索技术，分瓣开挖一次支护完成，节省了工期和造价，同时是省内第一座在调压井内设置快速闸门的工程；福川水电站引水隧洞是甘肃省内最大的无压引水隧洞，跨度9.0m，高度11m，采用半洞支护结构，在满足安全的前提下节省了工程投资。

The closed ring confining truss is set along the periphery of the reticulated shell, and the stiffening truss is set in the middle single-layer shell which can take advantage of the architectural shape. These measures resolve the contradiction between overall stability and temperature stress, and also avoid the shell thrust act on the lower concrete structure directly. Besides, these measures simplify the design of the shell bearing and the concrete structure, and the cost of the concrete structure can also be saved.

网壳通过可径向滑动球铰支座与下部混凝土结构连接，网壳周边设置封闭环形约束桁架，中间单层壳体部分利用建筑凸肋造型设置加劲桁架，解决了保证整体稳定和减小温度应力之间的矛盾，同时避免了网壳侧推力直接传递给下部混凝土结构，简化了网壳支座及下部混凝土结构的设计，节约了混凝土结构的造价。

But on the other hand, the steel construction has the disadvantages of poor fire prevention, bad antiseptic performance and high the fabrication cost.

但与此同时，钢结构也有防火、防腐性能差，造价偏高等缺点。

Catalyst is one of the most important factors to determine the cost and life of reforming system in natural gas steam reforming process.

重整催化剂是影响重整制氢系统造价和寿命的重要因素。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。