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burn off
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  “burn off”译为未确定词的双语例句
     It was found that the yields of AC decreased with the water vapor activation time increase,and the burn off of the AC was as high as 73 5 % with the 2 h activation time but the surface area were increased from 761 m 2/g to 1 480 m 2/g.
     实验发现 ,随着活化时间的延长 ,活性炭收率降低 ,活化 2 h烧失率高达 73.5 % ,比表面积从原来的 761 m2 g增加到 1 480 m2 g.
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     The result shows that total micropore volumes and BET surface areas increased with the degree of activation to 0.499 ml/g and 897.2 m2 /g, respectively, while the development of external surface area was particularly rapid at degrees of activation above 50 wt% burn off.
     结果表明,随着活化程度的提高,总的孔容积和比表面积随活化程度的增加而增大到0.499 ml/g and 897.2 m~2/g,特别是烧失率超过50%以后非常显著。
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     The effect of the burn off rate on the structure and mechanical properties in the friction welded joint of low alloy constructional steel 35CrMo is studied in this paper.
     研究了变形速率对低合金结构钢 3 5CrMo磨擦焊接头组织与力学性能的影响 .
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     The-TCP blanks were sintered in an electric muffle furnace according to following procedure: First the temperature rise in a low speed of 2℃/min , when it reach to 80℃ and keep it for 1 hours to burn off the naphthalene.
     坯体烧成制度如下:在0~80℃以2℃/min的速率缓慢升温至80℃后保温1h;
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     Through the calculation of boiler combustion stability and burn off it is possible to obtain for the new boiler a combustion performance as high as that of the prototype boiler.
     通过锅炉燃烧稳定性及燃尽性计算 ,可获得新炉与样机炉一样满意的燃烧性能。
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  相似匹配句对
     Burn's and C.
     BurnS和C.
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     REPRODUCTION OF BLAST FURNACE AFTER BURN-OFF AT HEARTH
     高炉炉底烧穿后再生产的实践
短句来源
     OFF model.
     OFF动态模型对单分子光子源强度涨落进行了分析。
短句来源
     Burn and hypernatremia
     烧伤与高钠血症
短句来源
     Mathematical Model of Bentonite Burn-off in Green Sand Mould
     湿型砂膨润土烧损的数学模型
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  burn off
It is found that cassiterite begins to form at a temperature as low as 250 °C when organics start to burn off.
      
The regeneration procedure consisted only two steps: the burn off in air and the reduction in hydrogen.
      
An accurate description of coke burn off is obtained from a catalyst based on β-zeolite and used for benzene alkylation with propylene giving cumene by using the thermogravimetric technique.
      
The amorphous parts of the pyrocarbon coatings burn off more quickly than the pyrocarbon itself and thereby a relief-like coating structure appears.
      
In this experiment coal's evaluation indexes (ignition index Di), (burn off index Df) were used to qualitatively show the ignition property and combustion ending property of coal samples.
      
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Significant loss of mercury can be prevented in the electrothermal atomizer duringdesolvation and charring stages when microgram amounts of noble metals such as gold,platinum and palladium are used as stabilizers to modify the matrix.A charringtemperature up to 500℃ may be tolerated in the presence of palladium,which is 200℃higher than that obtained with the use of sulfide reported in the literature.Thehigher charring temperature is a distinct advantage for electrothermal atomic absorp-tion spectrometry since...

Significant loss of mercury can be prevented in the electrothermal atomizer duringdesolvation and charring stages when microgram amounts of noble metals such as gold,platinum and palladium are used as stabilizers to modify the matrix.A charringtemperature up to 500℃ may be tolerated in the presence of palladium,which is 200℃higher than that obtained with the use of sulfide reported in the literature.Thehigher charring temperature is a distinct advantage for electrothermal atomic absorp-tion spectrometry since organic compounds can be easily burnt off,and hence molecularabsorption eliminated.To examine the stabilization effect of noble metals on mercury in the electrothermalgraphite atomizer HGA-72,20μl of several 1 ppm mercury solutions containing gold,platinum and palladium respectively were injected into the furnace,and the absorbanceof mercury was measured at 2537 for various charring temperatures.The experimentalresults showed that the loss of mercury is serious even at 100℃ when no stabilizer wasadded,but if adequate amounts of gold,platinum and palladium are present,thecharring temperature could be raised to 250℃,300℃ and 500℃ respectively.Themechanism of the stabilizing effects may be due to the formation of more stable amal-gam.Based on the phenomena observed,an analytical method for the determination oftrace amount of toxic mercury in waste water is suggested.The effects of foreign ions on the determination of mercury were studied.It wasfound that thousand times the amounts of Ag(Ⅰ),Al(Ⅱ),As(Ⅲ),Ba(Ⅱ),Cd(Ⅱ),Co(Ⅱ),Cr(Ⅳ),Cu(Ⅱ),Fe(Ⅲ),K(Ⅰ),La(Ⅲ),Mg(Ⅱ),Mo(Ⅳ),Na(Ⅰ),Nb(Ⅴ),Ni(Ⅱ),Pb(Ⅱ),Rb(Ⅰ),Sb(Ⅲ),Si(Ⅳ),Sr(Ⅱ),Ta(Ⅴ),W(Ⅳ),phosphate,sulphate,EDTA,citrate,tartrate do not interfere with the determination.Various known amounts of standard mercury were added to a series of syntheticwaste water to give a range of mercury concentrations of 0. 010~0. 080 ppm in thepresence of palladium.Average recoveries were found to be 80~110%.This recommended technique should lend itself very well to the practical analysisof mercury in waste water samples.Trace amount (0. 5 ng) of mercury can bedetermined without any pretreatment.Detection limit of the method,defined here asa quantity of analyte which will produce an absorbance equal to twice the noise,wasfound to be 0. 2 ng of mercury if a volume of sample solution of 100μl was taken.

微克量贵金属可以改进基体,以防止汞在干燥和灰化过程中的严重损失.钯存在时,最高允许灰化温度为500℃,比应用硫化铵所能达到的灰化温度高200℃,并且干扰少,又不需要任何分离步骤,可用以测定废水中的痕量(0. 2毫微克)汞.

The present article deals with an appraisal of three old cultural methods forthe control of millet borer(Chilo infuscatellus Snellen).These are:(1)gatheringand burning off the millet stubbles that harbour the overwintering larvae:(2)delayed planting of millet so that it would avoid the peak of oviposition:(3)laying out the so-called“trapping field”,which is said to be more attractiveto the gravid female moths and then killing the young borers in that fieldwith an effective insecticide.It appears that none...

The present article deals with an appraisal of three old cultural methods forthe control of millet borer(Chilo infuscatellus Snellen).These are:(1)gatheringand burning off the millet stubbles that harbour the overwintering larvae:(2)delayed planting of millet so that it would avoid the peak of oviposition:(3)laying out the so-called“trapping field”,which is said to be more attractiveto the gravid female moths and then killing the young borers in that fieldwith an effective insecticide.It appears that none of them is feasible inmountainous regions.The peasant of Yenan,however,has a common practice in millet planting,i.e.,far-distance crop rotation.It was found that a distance as far as.1000M is adequate for lessening the borer infestation.This is especially truefor the mountain terrace where infestation is usually high in millet plotswithout crop rotation.In localities where the practice of crop rotation isimpracticable,thinning out the infested seedlings which are then used aslivestock feed is recommended.

本文分二部分。第一部分概述了延安地区栽培方式与粟灰螟发生的关系,指出由虫源的有无多寡,粟灰螟以为害山地粟为主,为害川地粟的主要是玉米螟。第二部分对老的和仍在提倡的三种防治粟灰螟的栽培方法,即:越冬期防治,调节播种期和早播诱杀田进行了探讨,指出了它们在生产上未能大规模推行的原因;并提出了合理倒茬与间苗灭虫两项可供选择的办法和提出这种办法的依据。

Traditional platen motion control in flash welding is based upon the continuous advance of a predetermined rate of velocity. The instantaneous change of the contact bridges is not taken into consideration in this control method and so the method has obvious limitations in regard to the improvements in flashing performance and raising heating efficiency.This paper introduces the principle of an instantaneous control of the platen motion in flashing welding,i.e, instantaneous regulation of the platen motion in...

Traditional platen motion control in flash welding is based upon the continuous advance of a predetermined rate of velocity. The instantaneous change of the contact bridges is not taken into consideration in this control method and so the method has obvious limitations in regard to the improvements in flashing performance and raising heating efficiency.This paper introduces the principle of an instantaneous control of the platen motion in flashing welding,i.e, instantaneous regulation of the platen motion in the course of making and breaking contact bridge during flashing. This control method can regulate the burn-off process of contact bridge according to requirements so that the required flashing voltage is lowered and the flashing heating efficiency raised.Moreover, by instantaneous control of the platen motion, the macro rate of velocity of the moving platen can be self adjusted to fit the change in burn-off rate of the flashing interfaces and a platen displa cement curve with similar shape as a ponential function can be automatically established.Application tests of this instantaneous control on a conventional flashing welding machine, show a stable flashing performance, yield high quality welds, and decrease the required specific power to one tenth.

传统的闪光焊动板控制是以给定速度持续送进为基础的,这种方法不考虑触点的瞬时变化,因而在改进闪光过程和提高加热效率方面有着明显的局限性。本文提出了一种闪光焊动板瞬时控制原理,即按照闪光时触点的产生与烧化过程对动板进行瞬时调节。这种控制方法可以根据要求改变触点的烧化过程,从而降低激发闪光所需的电压,提高闪光加热效率。对动板进行瞬时调节,还可以实现动板宏观速度自适应于工件烧化速度的变化,自动形成具有类似指数函数形式的动板位移曲线。本瞬时控制法在常规通用焊机上的应用试验表明:闪光过程稳定,焊接质量良好,可以降低比功率到十分之一。

 
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