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extra low
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  超低
     By adjusting the composition,a dielectric ceramic with extra low ε value was obtained. Its dielectric properties are:ε≈5,tgδ≤5×10 -4 ,α C≤(0±30)ppm/℃,I R≥10 12 Ω,and its sintering temperature is 1140℃.
     调整各组分 ,获得了超低介电常数的介质陶瓷 ,其介电性能为 :ε≈ 5 ,tgδ≤ 5× 10 -4 ,αc≤ 0± 30ppm/℃ ,IR≥ 10 12 Ω ,烧结温度为 1140℃。
短句来源
     Welding Technology of Urea Level Extra Low Carbon Stainless Steel 316Lmod
     316Lmod尿素级超低碳不锈钢焊接技术
短句来源
     By adjusting the composition,we obtain a dielectric ceramic with extra low ε value. Its dielectric properties is ε ≈5,tan δ ≤5×10 -4 , α c≤(0±30)×10 -6 /°C, I R≥10 12 Ω,and its sintering temperature is 1 140 °C.
     调整各组分 ,获得了超低介电常数的介质陶瓷 ,其介电常数ε为 5 ,介电损耗 tanδ≤ 5× 10 - 4 ,容量温度系参数αc≤ (0± 30 )× 10 - 6 /°C、绝缘电阻 IR≥ 10 1 2 Ω ,烧结温度为 1140°C。
短句来源
     Low Dixon′s resection was performed on 84 cases, extra low Dixon′s resection on 46 cases and Parks′ resection on 26 cases.
     低位Dixon手术84例,超低位Dixon手术46例,Parks手术26例。
短句来源
     Control on Deleterious Elements in Extra Low Sulphur Pipeline Steel X70
     X70超低硫管线钢中有害元素的控制
短句来源
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  特低
     Daanzhai reservoir in midSichuan has extra low permeability (01×10-3μm2), but minute cracks developed.
     川中大安寨油藏属特低渗油藏,渗透率为0.1×10-3μm2,但细微裂缝发育。
短句来源
     Research on Extra Low Delay of Video Coding and Decoding System over TM1300
     基于TM1300的特低时延视频编解码系统的研究
短句来源
     Niu 20 and Ying 11 are two development blocks with extra low permeability in Shengli Oilfield.
     牛20、营11是胜利油田的两个特低渗开发块。
短句来源
     Since 1994 the annual production increased to 20×104t in 1996 from 10×104t, it provided experience for developing depletiontype reservoirs with extra low permeability. 
     从1994年以来,由于应用综合技术措施,使原油年产量从10×104t增加到1996年的20×104t,实现了重建一个川中油矿的目标,为特低渗、消耗式开采油藏的开发提供了经验。
短句来源
     The reservoir is a low and extra low porosity, low and extra low permeability reservoir, but the petrophysical property of the reservoir in Jurassic is relatively superior and the next is the reservoir of Triassic.
     储集层整体上属低孔特低孔、低渗特低渗储集层,但侏罗系储集层物性相对较好,其次是三叠系储集层,再次是二叠系储集层。
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  极低
     The refining process for extra low sulphur steel has been experimented by 10 kg induction furnace, and the test results have proved that the sulphur content in steel could be less than 5×10\+-\+6 with desulphurizing by CaO\|MgO Al\-2O\-3\|SiO\-2\|CaF\-2 top slag of steel and CaO\|BaO\|CaF\-2 feeding wire slag.
     在 10kg感应炉内进行了极低硫钢精炼工艺实验 ,实验证明采用CaO MgO Al2 O3 SiO2 CaF2 系顶渣和CaO BaO CaF2 喂线渣能够将 [S]稳定地脱除到 5× 10 -6以下。
短句来源
     High temperature air combustion has excellent advantages of extra low NO x emission and high energy saving. It will have excellent applied prospects on ceramic kiln.
     指出高温空气燃烧技术具有高效节能和极低NOx 排放的双重优越性 ,在陶瓷烧成窑上应有好的应用前景。
短句来源
     In order to control the acid soluble Al content in steel to an extra low level firstly the steel has to be alloyed using less than 0.05 % Al containing ferrosilicon and then the refining temperature, A12O3 content and basicity of the refining flux be strictly controlled to avoid Al pick-up during refining in the ladle furnace.
     为控制钢中酸溶铝含量在极低水平,首先必须使用w(Al)<0.05%的硅铁合金化; 其次应该严格控制精炼温度、精炼渣的Al_2O_3含量和精炼渣碱度,以避免LF精炼过程钢液增铝。
短句来源
  “extra low”译为未确定词的双语例句
     The costs and the prof its ( ynan/mu ) were: a) 32.60 and 33.70, b) 29.98 and 30.41, c)23.78 and 34.54, d) 18.07 and 37.82 for extra low, low, medium and high fertility soils respectively.
     每亩投资和利润(元)分别为低肥田32.60和33.70,较低肥田为29.98和30.41,中肥田为23.78和34.54,高肥田为18.07和37.82。
短句来源
     On the basis of prior art about dephosphorization and the special regularity between [Si] and[C]、[P], the paper advances a new proecss in which extra low carbon low phosphor and silicon Mn-Si alloy is produced with a technology feasibility and a high economic benefit.
     本文在前人锰铁脱磷工作的基础上,基于[Si]与[C]、[P]之间的特殊规律,提出了技术上可行,经济效益较大的冶炼微碳低磷低硅硅锰合金的新工艺。
短句来源
     In order to acquire fine quality ferrosilicon with aluminum content below 0. 5% or 0. 1% as well as aluminum content below 0. 03% with extra low inclusion, beneficiated material feeding, strengthen management, careful operation and secondary steel-making measures are adopted.
     精料入炉,强化管理,精心操作以及合理地采取炉外精炼,可进一步降低硅铁合金铝含量至0.5%或0.1%以下,得到优质硅铁,也可得到铝0.03%以下、其它杂质含量也低的较纯净硅铁。
短句来源
     The process of production of low and extra low carbon ferrochromi urn is melting the carbon fcrrochromium and chromite by conduction of molten slag and resistance heat, undergoing liquid decarbonization with temperature of 1923—1973K, vacuity of 1333—2666Pa, gaining the products finally.
     真空熔渣电阻炉冶炼低微碳铬铁是利用熔渣导电,电阻发热使炭素铬铁和铬矿熔化,在1923—1973K、真空度为1333—266GPa下进行液态脱碳,从而获得低微碳铬铁。
短句来源
     STUDY ON THE EFFECT OF THE OTHER COMPOSITION IN EXTRA LOW CARBON FERROCHROMIUM TO THE ANALYSIS RESULT WHILE RAPIDLY DETERMINING SILICON CONTENT WITH THERMOELECTROMOTIVE FORCE(TEMF)
     热电动势法(TEMF)快速测定微碳铬铁硅含量时其它组分对分析结果影响的研究
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  extra low
Comparison shows that the wear behavior of Ti-6AI- 4V ELI (extra low interstitial) is as good as that of cobalt-chromium alloy, another candidate for surgical applications.
      
The texture changes that affect the main ideal orientations displayed by rolled low-and extra low-carbon steels are examined.
      
Development of ferrite rolling textures in low- and extra low-carbon steels
      
A low-carbon content of 0.05 pct compared with extra low-carbon content of 0.005 pct accelerated the precipitation of ε-Cu by preaging prior to cold rolling, and a nickel content up to 0.95 pct gave the adverse effect.
      
A modified liquid-mosaic model of molecular organization of the plasma membrane is proposed, which allow one to interpret non-receptor effects of regulatory peptides and the efficiency of biologically active compounds in extra low concentrations.
      
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A cyclic simple shear test apparatus, based on a static simple shear test apparatus which has been developed in Nanjing Hydraulic Research Institute since 1964, is constructed. This apparatus is composed of a simple shear box, an electro-magnetic exciter, the static loading system and the electronic recording system. A sample with diameter of 7cm and height of 2cm is enclosed inside a rubber membrane which is in turn confined by steel rings and is attached rigidly to the end plates. By means of the horizontal...

A cyclic simple shear test apparatus, based on a static simple shear test apparatus which has been developed in Nanjing Hydraulic Research Institute since 1964, is constructed. This apparatus is composed of a simple shear box, an electro-magnetic exciter, the static loading system and the electronic recording system. A sample with diameter of 7cm and height of 2cm is enclosed inside a rubber membrane which is in turn confined by steel rings and is attached rigidly to the end plates. By means of the horizontal loading system the initial shear stress is applied to the sample. The vertical and horizontal loads are applied pneumatically and are controlled seperately by two regulating valves.The base of the simple shear box is connected with the excitor which applies the cyclic shear stress to the sample. The amplitude and the frequency of excitation is controlled by the extra-low frequency signal generator, and the signal generated by the latter is amplified and input to the excitor. The max. exciting force is 120kg, and the frequency generally used is 2~3 Hz. During the test the variation of dynamic shear stress, pore pressure and displacement are measured by the transducers and are recorded by the oscilloscope.This apparatus has been now tested, adjusted, and used to investigate the characteristics of liquefaction of some saturated sand samples. It is shown that this apparatus works fairly well. Furthermore, its construction is simple, and it can be operated easily. Therefore it is concluded that this apparatus may be used to study the dynamic behaviour of the soil either for the practical engineering project or for the research purpose.

在我所1964年制成的静力单剪仪的基础上,研制了一种振动单剪仪。此仪器由剪切盒、静力加荷系统、电磁式激振器和电子测量系统组成。剪切盒由多个圆环迭成,圆环内有橡皮膜,在其中安装试样.垂直和水平荷重是用气压施加的,并且分别由两个调压阀控制。利用水平加荷设备,可以使试样在各种不同的初始剪应力下振动.激振力是由超低频讯号发生器发出的讯号,通过功率放大器放大,再输入激振器而产生的。最大激振力为120kg,常用的频率为每秒2周。利用这种仪器,可以测量不排水试样在各种振动过程中的动剪应力、孔隙压力和位移,并确定其动剪切模量、阻尼比或液化强度等。经过初步试验,证明其性能尚佳.此仪器结构简单,加工容易,电子仪器设备可用国内产品配套,进行试验时制备试样和操作都比较方便,是目前一种比较实用的研究土的动力性质的仪器.

This paper was aimed at investigatiing the influence of post-weld heat treatmenton the mechanical properties of stainless steel overlaid joint and discussing the relaiionbetween the change in impact toughness and micro structure in the overlaid cladding.The base metal was Q-T treated Ni Cr-Mo-V high strength steel.In the inner surfaceof vessel two layers of clad metal were deposited by submerged arc weldingwith chromium-nickel stainless steel strip as the consumable electrode.The first layerwas 0Cr20Ni10 and...

This paper was aimed at investigatiing the influence of post-weld heat treatmenton the mechanical properties of stainless steel overlaid joint and discussing the relaiionbetween the change in impact toughness and micro structure in the overlaid cladding.The base metal was Q-T treated Ni Cr-Mo-V high strength steel.In the inner surfaceof vessel two layers of clad metal were deposited by submerged arc weldingwith chromium-nickel stainless steel strip as the consumable electrode.The first layerwas 0Cr20Ni10 and the second layer was 00Cr20Ni10 stainless steel.A seriesof test specimens were taken from the overlaid cladding,bonding line and heataffected zone of welded pieces,which had been heat treated at 600,625,650and 680℃ for 15,30,50 and 100 hours.The results obtained are as follows:(1)The post-weld heat treatment temperature shouldnt be over 650℃ for Q-Ttreated Ni-Cr-Mo-V high strength steel.(2)All side bending specimens are freeof cracks after bending,but the ductility in the bonding area decreases with increasedtime of post-weld heat treatment and its temperature.Ductility loss is associatedwith the width of diffusion of carbon from base metal to the overlaid cladding.(3)The toughness of the overlaid cladding decreases with increased time of post-weld heat treatment and its temperature.The decrease of toughness also depends onferrite content and carbon content.(4)0Cr20Ni10 low carbon stainless steelcladding is less susceptible to embrittlement than 0Cr20Ni10Nb cladding.(5)The embrittlement of 00Cr20Ni10 extra low carbon overlaid cladding after post-weldheat treatment is due to the Cr23C6 precipited along the ferrite boundries as wellas the formation of a very small amount of (?) phase.

本文研究了焊后热处理对不锈钢堆焊接头机械性能的影响,并探讨了堆焊层韧性和显微组织变化之间的关系。母材是调质处理的Ni-Cr-Mo-V 高强钢。容器内壁采用双层带极埋弧堆焊工艺,过渡层和不锈层分别为0 Cr20Ni10和00 Cr20Ni10不锈钢。试件取自堆焊层、接合区和热影响区,其焊后热处理工艺是600、625、650和680℃并均分别保温15、30、sO和100小时。试验结果如下:(1)对调质处理的Ni-Cr-Mo-V 高强钢,焊后热处理温度不得高于650℃。(2)冷弯后所有侧弯试件都未出现裂纹,但接合区的延性却随加热温度的提高和保温时间的延长而减少。延性减少与接合区中碳扩散层宽度有关.(3)堆焊层韧性随加热温度的提高和保温时间的延长而减少。它也与堆焊层的焊态铁素体含量和含碳量有关.(4)0Cr20Ni10不锈钢堆焊层的抗脆化性能高于0 Cr20Ni10Nb 堆焊层.(5)对00Cr20Ni10超低碳堆焊层热处理后产生脆化的原因是沿铁素体相析出Cr23C6和形成极少量的σ相.

Silicon content severly influences the behavior of intercrystalline corrosion of the extra low carbon, Cr-Ni austenite stainless steels in strong oxidizing concentrated nitric acid. In sensitized high purity stainless steel containing Si less than 0.1% the intergranular corrosion susceptibility decreases while in non-sensitized high Si stainless steel containing Si more than 2% the intergranular corrosion susceptibility decreases. The modelling of correlation between Si content and corrosion rate of extra...

Silicon content severly influences the behavior of intercrystalline corrosion of the extra low carbon, Cr-Ni austenite stainless steels in strong oxidizing concentrated nitric acid. In sensitized high purity stainless steel containing Si less than 0.1% the intergranular corrosion susceptibility decreases while in non-sensitized high Si stainless steel containing Si more than 2% the intergranular corrosion susceptibility decreases. The modelling of correlation between Si content and corrosion rate of extra low carbon, Cr-Ni austenite stainless steels has been identified in 98% smoke nitric acid. Based on the distribution profile of test data, the following exponential model has been selected:Y=B1+B2exp-[B3(X-B4)2]where Y is corrosion rate (g/m2.h); X is Si content in steel (%); B1, B2, B3, B4 is model parameters. These parameters were estimated by simplex searching method.

超低碳铬镍奥氏体不锈钢中的硅含量,对钢在强氧化性介质浓硝酸中晶间腐蚀行为,有着重要的影响,硅含量小于0.1%的高纯不锈钢,可降低敏化态晶间腐蚀,而硅含量大于2%的高硅不锈钢则可以降低非敏化态晶间腐蚀。 本文采用电子计算机对超低碳铬镍奥氏体不锈钢在98%发烟硝酸中腐蚀率和钢中硅含量关系的数学模型,进行了辨识。根据试验数据散点图形状,选定指数模型: Y=B_1+B_2exp〔-B_3(X—B_4)~2〕,其中Y为腐蚀率(g/m~2·h),X为钢中硅含量(%),B_(19) B_(29) B_(39) B_4为模型参数。模型参数采用非线性回归的单纯形搜索法进行估计。

 
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