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  explosion
     Kinetic Research on the Thermal Explosion Synthesis of TiAl_3
     热模式燃烧合成TiAl_3动力学研究
短句来源
     EXPERIMENTAL DATA EMPIRICAL FITTING OF AIR SHOCK PARAMETERS BY CHEMICAL EXPLOSION
     化空气冲击波参数实验数据的经验拟合
短句来源
     RESEARCH OF MODEL BR-1 HEAT-INSULATING TYPE EXPLOSION HEAT MEASURE SYSTEM
     BR-1型绝热式热测量系统的研究
短句来源
     Experimental Study on the Bearing Capacity of Short Composite Columns under Axial Load from Simulated Nuclear Explosion
     模拟核动载作用下轴压组合短柱承载力的试验研究
短句来源
     Experimental Study on the Deformation Behaviour of short Composite Columns under Axial Load by simulated Nuclear Explosion
     模拟核动载作用下轴压组合短柱变形性能的试验研究
短句来源
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  blasting
     Based on the actual condition of the electric blasting network, C is in the range of 2≤C≤3.
     根据电网路的实际情况,C值的取值范围:2≤C≤3。
短句来源
     The excess pore pressure and blast-enlargement distance are negative exponential distribution,the efficient ranges of both are 4~6 m,the drainage subsidence occurred in 2 to 3 d after blasting,and the subsidence of ground was 0.3~0.4 m.
     超孔隙水压力与扩距离均呈负指数规律分布,其有效范围为4~6 m,排水沉降主要发生在扩后2~3 d内,地面沉降量达0.3~0.4 m;
短句来源
     COMPREHENSIVE EVALUATION ON 18M HIGH BENCH ROCK QUALITY OF BLASTING PILE
     18m高台阶堆破岩质量综合评价
短句来源
     For parallel circular cutting and circuit smooth blasting, more reasonable cut blasting parameters are 1.0~ 1.2 m of diameter of arrangement circle of cut holes, 500~ 700 mm of hole interval, 2.2~ 2.8 kg·m\+\{-3\} of unit consumption of charge.
     直眼掏槽、周边光 ,较为合理的掏槽参数为 :槽眼布置圈径D =1.0~ 1.2m ,眼距a =5 0 0~ 70 0mm ,单位耗药量 q =2 .2~ 2 .8kg·m-3 ;
短句来源
     For BKF_1 ,as the diameter of the blasting fuse was 2.88mm and the distance of cavum less than 8mm ,the fuse could ignited BKF_1 under different atmospheric pressures.
     对硼系点火药BKF_1而言,直径为2.88mm的铅金属导索在空腔距离为8mm以内,均可以点燃不同压药压力的点火药柱;
短句来源
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  detonation
     The detonation performance of DNFOA(D=8560 m·s~(-1),p_(CJ)=33.6 GPa) was computed as well as RDX,and DNOAF has excellent detonation performance (D=9390 m·s~(-1),p_(CJ)=40.5 GPa) .
     根据Kamlet方程计算得到DNFOA的理论速D=8560m·s-1,压pCJ=33. 6GPa,DNOAF的理论速D=9390m·s-1,压pCJ=40. 5GPa。
短句来源
     the properties of DATH have been experimentally studied, its density 1.71 g/cm3, melt point 135~137 ℃, detonation velocity 8300 m/s(1.64), heat of combustion 1.08×104 kJ/kg, temperature of decomposition 192 ℃, friction sensitivity 12%(25 kg/cm2, 66°) impact sensitivity 95%(2 kg, 25 cm). 
     测试了DATH的部分理化及轰性能,其密度1.71g/cm3,熔点135~137℃,速8300m/s(1.64g/cm3),燃烧热10822.02kJ/kg,分解温度192℃,摩擦感度12%(25kg/cm3,66°),撞击感度95%(12kg,25cm)。
短句来源
     Some physical and detonation properties were also measured,with density 1.795g/cm3,melt point 170-171℃,detonation velocity 7177m/s(1.530g/cm3),temperature of decomposition 260℃,friction sensitivity 8%(90°),impact sensitivity 60%(10kg,25cm),and vacuum stability test 0.4-0.7mL(5g,100℃,48h).
     经测定,DATF的部分理化及轰性能为:密度1.795g/cm3,熔点170~171℃,速7177m/s(1.530g/cm3),热分解温度260℃,摩擦感度8%(90°摆角),撞击感度60%(10kg,25cm),真空安定性(5g样品,100℃,48h),放气量0.4~0.7mL。
短句来源
     In this paper, the detonation velocities of industrial explosives are calculated with the formula D_v=(knRT_v)~(1/2)/(1—αρ_o).
     本文采用公式D_v=(knRT_v)~(1/2)(1-αp。) 计算工业混合炸药的速。
短句来源
     The standard enthalpy (ΔH0_f) of formation of TATF and DOATF were calculated to be 4526.0 kJ·kg -1 and 4144.2 kJ·kg -1 respectively. These two compounds all have excellent detonation performance with detonation velocity to be 8150 m·s -1 and 8180 m·s -1 , detonation pressure to be 29.5 GPa and 29.2 GPa.
     计算得出两个大环呋咱化合物的标准生成焓分别为4526.0kJ·kg-1和4144.2kJ·kg-1,计算速分别为8150m·s-1和8180m·s-1,压分别为29.5GPa和29.2GPa。
短句来源
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  explosive
     For AN-TNT-DNT-Al explosive, when the content of aluminium powder is increased from 0 % to 14 %, the explosion heat Q_(V) increases by 58.34 %, the specific volume V_(0) reduces by 15.7 %, and the multiplier product Q_(V)V_(0 )increases by 33.5 %
     对于AN-TNT- DNT -Al炸药,随着铝粉含量由 0%增至 14%,炸药的热Qv增加 58. 34%,比容V0下降 15.7%,QvV0的乘积增加 33.5%。
短句来源
     Result showed that CDF can initiate HNS-Ⅱ. When the length of encased MDF in the HNS-Ⅱis from 3mm to 4mm, the density of the explosive is from 1.50g/cm3 to1.70g/cm3, the system has stable detonation transfer capability.
     研究表明采用合理的设计,限制性导索可以起HNS-Ⅱ,柔性导索(MDF)埋入长度为3~4mm、炸药密度在1.50~1.70g/cm3时输出传接头具有稳定的轰输出。
短句来源
     The Relation of Output Steel Dent and Explosion Pressure of Compound Explosive HMX/F_(2641)
     HMX/F_(2641)混合炸药输出钢凹值与压关系的研究
短句来源
     The following results were shown: For AN-TNT-DNT explosive, when the DNT content in the explosive is increased from 0% to 5%, the explosion heat Q_(V ) reduces by 1.6 %, the specific volume V_(0) increases by 1.0 %, and the multiplier product Q_(V)V_(0) reduces by 0.6 %;
     结果发现:对于AN- TNT -DNT炸药,随着DNT含量由 0%增加到 5%,炸药的热Qv减少 1. 6%,比容V0增加 1.0%,QvV0的乘积下降 0. 6%;
短句来源
     This kind of low detonation velocity explosive is composed of 83%~87% expanded ammonium nitrate,3.0%~4.0% wood powder,2.0~3.0% composite fuel oil,4.0%~5.0% high energetic additives and 6%~8% dilution agent.
     用自敏化改性膨化硝酸铵为氧化剂的低速膨化硝铵炸药的配方为(质量分数):膨化硝酸铵83%~87%、木粉3.0%~4.0%、复合油2.0%~3.0%、高能添加剂4.0%~5.0%和稀释剂6%~8%。
短句来源
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  explosion
Non-divergence form operators and variations on Yau's explosion criterion
      
To avoid the problem of schemes combination explosion caused by unbounded depth in the search process, bounded depth-first search was used to control the number of expanded hierarchies for a design tree.
      
The Meishucun stage is the prelude in deciphering the Cambrian Explosion.
      
These new materials provide new evidence for the origin, evolution and the functional evolution of the metazoan during the early stage of the Cambrian Explosion.
      
Numerical analysis of welded joint treated by explosion shock waves
      
更多          
  blasting
An evaluation formula of the detonation wave pressure in the system of laser, energy transferring-medium and sheet metal is built according to the theory of detonation wave and blasting gas-dynamics.
      
A nondestructive method of monitoring the heat resistance of aluminum coating deposited onto substrate subjected to shot-blasting is suggested.
      
By this method was studied the damage caused by blasting in üAspüo diorite rock samples.
      
A radioisotopic method for determining the depth of surface cold-work hardening in 09Г2C-steel pipelines subjected to shot blasting is described.
      
A radioisotope technique for estimation of heat resistance of aluminum coatings after shot blasting
      
更多          
  detonation
An evaluation formula of the detonation wave pressure in the system of laser, energy transferring-medium and sheet metal is built according to the theory of detonation wave and blasting gas-dynamics.
      
multicycle pulse detonation engine (PDE) model, and liquid fuel (gasoline) was used.
      
The average of pressure peak, as measured by piezoelectricity pressure transducer, increased versus distance to thrust wall before fully-developed detonation came into being.
      
According to the pressure history, the pressure in detonation tube would not rise abruptly until the flame front advanced a certain distance downstream the spark.
      
One was enforced by combustion and became detonation rapidly.
      
更多          
  explosive
The explosive performances of DAAT were calculated theoretically by VLW equation-of-state (EOS) and the results showed that several explosive formulations based on DAAT have high-energy and insensitive performance.
      
Secondly, the effect of explosion shock waves, produced by plastic strip-like explosive, on welding residual stress distribution was predicted with coupled Lagrange-ALE algorithm.
      
Transformation characteristics of TiNi/TiNi alloys synthesized by explosive welding
      
The black shales also contain K-bentonites from explosive, felsic-intermediate volcanism, the distribution of which also supports orogeny to the southeast.
      
The model of a current meander is put forward, which explains the generation of an inductance electric field, current wedge, and other effects of the explosive onset of a substorm.
      
更多          
  其他


A spectrographic procedure for determining copper in concentrated iron ores has been worked out for routine analysis. The powder method is found to be satisfactory with a medium quartz spectrograph and an activated a. c. arc between carbon electrodes as light source. In order to minimize erratic burning of the sample, the electrodes are pre-burned for one minute and then loaded with a mixture of equal weight of the ore sample and carbon powder. The analysis pair of lines chosen are: Cu 2824.369- Fe 2824.67 for...

A spectrographic procedure for determining copper in concentrated iron ores has been worked out for routine analysis. The powder method is found to be satisfactory with a medium quartz spectrograph and an activated a. c. arc between carbon electrodes as light source. In order to minimize erratic burning of the sample, the electrodes are pre-burned for one minute and then loaded with a mixture of equal weight of the ore sample and carbon powder. The analysis pair of lines chosen are: Cu 2824.369- Fe 2824.67 for copper contents ranging from 0.05 to 0.3%, and Cu 2824369- Fe 2828.813 for those between 0.3 and 1.0%. The results obtained spectrographically have been checked by wet chemical analysis, amongst 110 samples 80% of which the two methods checked within 0.02%.

我们尝试用光谱的方法协助解决分析大量铁矿精矿试样中微量铜(O.05-0.1%)的问题。采用了交流电弧碳电极粉末法,应用现有的设备(中型光谱仪、不纯碳电极、质量低的照相板)进行试验,找出了比较适当的激发条件和分析线对。把空白碳电极加以预燃并在铁矿试样中搀入适当分量的碳粉,可以基本上消减样品在燃烧中的喷现象。根据样品的燃烧曲线的研究,选择了适当的曝光时间,使分析的结果不受样品所含铜的化学组成状态的影响。 所选定的分析线对当含铜量在0.05-0.3%的范围内时是Cu2824.369-Fe2824.67,当含铜量在0.3-1.0%的范围内时是Cu2824.369-Fe2828.813。根据所得的两条定标曲线作了110个样品的分析,光谱分析结果与化学分析结果的差值在0.02%以下的约占分析样品总数的80%左右。关于含铜量为0.05-0.3%的样品,光谱分析已经可以代替化学分析,并节省大量的人力和物资。

This Paper discusces the fundamental Principle and design of the electronic millisecond difference exPloder. This instrument can supply electrical imPulses at a fixed time to a set of detonator. The advantages of this instrument are:[1] The time interval of two exPlosion may be adjusted from 1 millise-cond to 500 millisecond. The Process of adjustment is simple.[2]The error of time interval of this instrument is smaller than any ther instruments of this kind.[3] In this instrument the thyratrons are used as...

This Paper discusces the fundamental Principle and design of the electronic millisecond difference exPloder. This instrument can supply electrical imPulses at a fixed time to a set of detonator. The advantages of this instrument are:[1] The time interval of two exPlosion may be adjusted from 1 millise-cond to 500 millisecond. The Process of adjustment is simple.[2]The error of time interval of this instrument is smaller than any ther instruments of this kind.[3] In this instrument the thyratrons are used as the switch elements. The Performance of such switchs is stable. AntiexPosion may be avoided.

本文讨论电子毫秒微差放炮器的基本原理及设计,此仪器能按一定时间间隔向电雷管组供给电流脉冲,它的优点是: (1)时间间隔可在1毫秒至500毫秒范围内调节,调节手续很简单。 (2)此仪器的时间间隔的误差小于同类型的其他仪器。 (3)在此仪器中用闸流管作为开关元件,它的性能很稳定,拒可以避免。

The citrus flat-headed borer is the most destructive of citrus insects which occurs commonly in Cheu-Hsien, Chekiang province. It caused a great damage in the past years. From some of the agricultural-production brigades, more than half of the infested citrus trees had to cut down despite years of toil. The different stages of the this insect are rather indistingly overrlapped, overwintering in the larval stage in side the wood cylinder or cork layer of the tree, beginning to pupate about the first ten days...

The citrus flat-headed borer is the most destructive of citrus insects which occurs commonly in Cheu-Hsien, Chekiang province. It caused a great damage in the past years. From some of the agricultural-production brigades, more than half of the infested citrus trees had to cut down despite years of toil. The different stages of the this insect are rather indistingly overrlapped, overwintering in the larval stage in side the wood cylinder or cork layer of the tree, beginning to pupate about the first ten days of the following March. Pupation occurred mostly at the end of March to the beginning of April. Emergence of adults was firstly seen about the end of March, while it reached the maximum at the end of April. The beetles leaving their turnels are intimately related with air temperature and moisture conditions. Beetles were first observed about the first ten-days of May, reaching a climax during 15—21 of May. Oviposition was first observed during the last 10 days of May, crest of oviposition expected to be from June 5 to July 1, covering a period of 10—21 days. Larvae began to hatch about the middle ten days of June, and hatched most abundently during later ten days of June to the middle ten days of July. After hactching, larvae bored into and injured the bark, causing gummosis of the host tree, breaking down of the injured bark, which and finally resulted in killing of the whole tree. The most effective control measure was found by application of 25% DDT emulsion diluted with an equal volume of kerosene. Application of this insecticide in October or November to kill the larvae before overwintering proved to be effective control of the pest. Fairly good result was also obtained by application during the end of April to the beginning of May, to kill the adults prior to leaving their turnels. Against the newly hatched larvae in July and August, control with mixture of 25% DDT emulsion and kerosene in 1:1 or 1:2 by volume, or with 5% DDT solution in kerosene resulted in over 93% efficacy. Besides, one should carefully note egg laying of the insect soas to give a timely brushing of the eggs applied prior to hatching and soon after the crest of oviposition. Dead plants should be dug out and burnt before April. Good management of the citrus orchard should be maintained during ordinary period. In short, only when a complete series of control measures he practiced that this pest can be destroyed.

柑桔皮虫是为害柑桔的一种毁灭性害虫,浙江衢县普遍发生,历年来为害惨重,个別生产队已有半数以上的桔树忍痛砍伐,多年經营毁于一旦,給柑桔生产带来巨大損失。皮虫的发生世代很不整齐,以幼虫在木質部或韌皮部中越冬,翌年3月上旬开始化蛹,3月底、4月初为化蛹盛期,3月底开始羽化为成虫,4月底为羽化高峯,成虫出洞与溫湿度关系密切,5月初开始出洞,5月15—21日为出洞高峯,5月下旬开始产卵,估計6月5日至7月1日为产卵盛期,卵期約10—21天,6月中旬开始孵化为幼虫,6 月下旬至7月中旬为孵化盛期,幼虫孵化后即侵入树皮为害,造成流膠、皮等症狀,最后树皮枯死剝落,整株桔树死亡。防治皮虫的藥剂以1:1火油加25%223乳剂混合液为佳。在10、11月防治越冬前幼虫,在4月底5月初防治出洞前成虫,效果均良好。在7、8月份对剛孵化的幼虫应用1:1或2:1火油加223乳剂,及5%223油剂防治效果也在93%以上。此外,掌握成虫产卵习性,在幼虫孵化前,产卵盛期后进行一次刷卵工作,將已枯死的桔树,在4月份前挖起燒毁,平时加强桔园田间管理,对防治皮虫都有一定作用。总之,只...

柑桔皮虫是为害柑桔的一种毁灭性害虫,浙江衢县普遍发生,历年来为害惨重,个別生产队已有半数以上的桔树忍痛砍伐,多年經营毁于一旦,給柑桔生产带来巨大損失。皮虫的发生世代很不整齐,以幼虫在木質部或韌皮部中越冬,翌年3月上旬开始化蛹,3月底、4月初为化蛹盛期,3月底开始羽化为成虫,4月底为羽化高峯,成虫出洞与溫湿度关系密切,5月初开始出洞,5月15—21日为出洞高峯,5月下旬开始产卵,估計6月5日至7月1日为产卵盛期,卵期約10—21天,6月中旬开始孵化为幼虫,6 月下旬至7月中旬为孵化盛期,幼虫孵化后即侵入树皮为害,造成流膠、皮等症狀,最后树皮枯死剝落,整株桔树死亡。防治皮虫的藥剂以1:1火油加25%223乳剂混合液为佳。在10、11月防治越冬前幼虫,在4月底5月初防治出洞前成虫,效果均良好。在7、8月份对剛孵化的幼虫应用1:1或2:1火油加223乳剂,及5%223油剂防治效果也在93%以上。此外,掌握成虫产卵习性,在幼虫孵化前,产卵盛期后进行一次刷卵工作,將已枯死的桔树,在4月份前挖起燒毁,平时加强桔园田间管理,对防治皮虫都有一定作用。总之,只有全面的貫彻綜合防治措施,才能彻底的消灭皮虫的为害。

 
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