1)  time to ignition
热爆炸延滞期
1.
On the basic of "time to ignition and degree of super criticality law",a kind of new calculation method of scale time of adiabatic explosion under the marginally supercritical condition was worked out.
以边缘超临界化学放热系统的"平方根反比定律"为理论基础,通过分析绝热系统热爆炸延滞期的定义,得出了绝热系统热爆炸延滞期在边缘超临界条件下的新计算方法。
2)  thermal explosion
热爆
1.
Thermal Explosion of NiAl Intermetallic Compounds;
NiAl金属间化合物的热爆合成过程研究
2.
The composite materials of Al/Mg2Si with different Al contents are prepared by thermal explosion,the phases and microstructures of Al/Mg2Si are investigated by means of XRD and SEM,respectively,and the micro-hardness,porosity ratios of Al/Mg2Si material are imitated and analyzed.
通过热爆反应模式制备不同Al含量的Al/Mg2Si复合材料,用XRD研究产物物相组成,用SEM观察其微观组织形貌,并对复合材料的硬度和孔隙率进行了拟合分析。
3.
TiC/Ni_3Al products are created by thermal explosion reaction.
采用SEM和EDS分析对Ti-C-3Ni-Al体系热爆合成反应进行了研究。
3)  Thermal explosion
热爆炸
1.
Random nature of thermal explosion criticality of exothermic system;
化学放热系统热爆炸临界值的随机性
2.
A calculation of the critrical parameters of thermal explosion for the finite cylinder of enegetic materials;
圆柱形含能材料热爆炸临界参数计算
3.
The method of thermal explosion temperature control blasting(TCB) seepage flow combustion(SFC) in underground coal gasification (UCG) was suggested, in light of the real problems of carrying out UCG in the dip, gently dip or nearly horizontal coal seams.
鉴于我国在倾斜、缓倾斜或近水平煤层中进行地下气化所遇到的实际问题 ,提出了煤炭地下气化热爆炸 -温控爆破渗流燃烧技术 ,简述了热爆炸基本原理 ,介绍了模型试验台结构、爆破参数设计、测试系统及冷态试验 ,并对试验结果进行了分析 。
4)  Electro-thermal explosion
电热爆炸
1.
Performance of anti-corrosion and heat resistance of FeAl-based plasma spray coatings prepared by electro-thermal explosion method;
FeAl系电热爆炸喷涂层抗高温氧化腐蚀性能对比
2.
Three kinds of plasma spray coatings FeAl, FeCrAl and FeCrAlRE were prepared using instantaneous high-energy shock wave effect during electro-thermal explosion of FeAl conductor alloy foil.
利用金属导体FeAl系合金箔,电热爆炸产生的瞬间高能量冲击波效应,制备FeAl、FeCrAl、FeCrAlRE等离子体喷涂层。
3.
Prepare two kinds of plasma spray coatings:NiAl and NiCrAlRE,by using instantaneous high-energy shock wave effect produced by electro-thermal explosion of metal conductor alloy foil of NiAl base.
利用金属导体NiAl系合金箔,电热爆炸产生的瞬间高能量冲击波效应,制备NiAl、NiCrAlRE两种等离子体喷涂层。
5)  combustion synthesis
热爆合成
1.
The ΔGT of NiTi reaction system by combustion synthesis was calculated.
对热爆合成NiTi反应标准吉布斯自由能(△G_T)进行计算,表明Ni_3Ti、NiTi_2和NiTi都有可能存在于反应过程中。
2.
Meanwhile,the reaction mechanism of combustion synthesis of TiAl intermetallic was analyzed from the point of thermodynamics and dynamics.
采用放电等离子技术低温快速热爆合成TiAl金属间化合物粉末,利用X射线衍射对合成粉末进行物相鉴定,并研究了合成温度以及保温时间对TiAl化合物粉末合成的影响。
3.
The effect of Al content on the process of synthesis and relative density of the composite, and the mechanism of combustion synthesis of TiC particles are studied.
研究了体系中Al含量对反应合成过程及复合材料致密度的影响 ,分析了热爆合成TiC粒子的形成机制。
6)  thermal explosion reaction
热爆反应
1.
When Al and Ti mixture preforms is preheated at the higher temperature than the start temperature of thermal explosion reaction,coarse particulate of Al3Ti is made by thermal explosion mechanism.
研究发现:Al粉和Ti粉混合预热生成Al3Ti是由Al粉的熔化诱导;在高于热爆起始温度下预热时,Al3Ti直接以热爆反应机制生成;在低于热爆起始温度下预热时,Al3Ti按扩散-热爆反应机制生成。
参考词条
补充资料:欧洲式期权、美国式期权与亚洲式期权


欧洲式期权、美国式期权与亚洲式期权


  【欧洲式期权、美国式期权与亚洲式期权】期权合约所规定的权利有一定的时效期,过了失效日后,权利即行作废。一些期权规定权利仅能在有效期的最后一天执行,这种期权被称为欧洲式期权(ell功pean叩tions);另一些期权则容许在有效期内任何一天执行,这种期权被称为美国式期权(一~oPtions)。值得指出的是,虽名为欧洲式或美国式期权,但已无任何地理上的意义。由于欧洲式期权的规定过于严格,又出现了一种“改变的欧洲式期权”,它允许期权在一定的时间范围内进行交易。可见,美国式期权为期权购买者提供了更多的选择机会,因此,它的购买者也往往需支付更高的保险费。近年来无论在欧洲或美国,所交易的期权均以美国式为主,欧洲式期权虽仍存在,但其交易量已比不上美国式期权。 在so年代末期,市场上又出现了一种所谓亚洲式期权(asian ontions),但也无地理上的意义,其差别主要在于履约价值(exe而sev公此)的计算。以买权为例,无论是美国式期权或是欧洲式期权,执行权利所能得到的履约价值均为当时标的物的市价减去履约价格,再乘以合约所定的数量,但亚洲式期权的履约价值则为权利期间内标的物市价的平均(计算至履约日为止),减去履约价格,再乘以合约所定的数量。
  
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