馏分

The results show that the behavior of hydrogen isotope fractionation in the albitic melt- water system cannot be analogously applied to that in the rhyolitic melt- water system except at particular...

本文拟合的硅酸盐熔体-水体系氢同位素分馏等值线在 P- T空间的形态变化特征与矿物-水体系存在较大差异。

During the evolution of these granitoids which resulted from rejuvenation and anatexis of the old basement (1200-2000Ma), the main ways for REE differentiations were:(1) partial melting;(2) fractional crystalization;(3) thermogravitational diffusion;(4) differentiations of metamorphism and migmatism, and (5) hydrothermalism.

在花岗岩的形成和演化过程中，有五种最主要的方式造成REE的分馏作用：(1)部分熔融作用；(2)分离结晶作用；(3)热重力扩散作用；(4)变质-混合岩化作用和(5)热液流体作用。

The main method of separation used in refineries is fractional distillation , although further processing is normally required to produce marketable petroleum products .

炼油厂所使用的主要分离方法是分馏，不过分馏所得一般都需要一步加工才能成为可供销售的石油制品。

The second variation type is called reversion evolution type, which represents the liquid segregation mainly with vapour-liquid fractional distillation. The third variation type is called saltatory variation type, which is formed from the liquid segregation mainly with immiscibility.

称为正向演化类型，是结晶分异结果；②称为反向演化类型，代表气液分馏为主的液态分离；③称为演化突变类型，是不混溶为主的液态分离形成。

Secondly,the synthesis of SIPE and the reaction conditions such as catalyst,anti-ether agent,temperature and water are researched to control the generation of diethylene glycol and the self-polymerization of SIPM by controlling the total quantum of distillate and the temperature of distillation column and reaction and the reliable synthetic conditions of SIPE are obtained.

其次，在此基础上，研究了三单体的中间体SIPE的合成工艺，研究了催化剂、抑醚剂、反应温度及水分等对合成反应的影响，同时提出了控制馏出物总量、控制分馏柱温度和控制反应温度等措施来控制二甘醇生成反应和SIPM自聚等副反应，得到了可靠的SIPE合成工艺。

Lianghe turpentine relative density, refractive index, initial boiling point, distillation range size, optical activity and chemical composition as well as the softening point, acid value, unsaponifiable matter content, ethanol insoluble matter, ash, optical activity and chemical composition and other physical and chemical characteristics of rosin gum were studied.

研究梁河脂松节油的相对密度、折光率、初馏点、馏程体积、旋光度和化学组成以及脂松香的软化点、酸值、不皂化物含量、乙醇不溶物、灰分、旋光度和化学组成等物理和化学特征。

Molecular laser follows in ArF (193 Nm) and laser of solid of Nd ∶ YAG (213 Nm) differs two kinds the laser of wavelengh denudes in the system, factor of elemental fractional distillation all compares groovy mode to fall to be close to more at 1, make clear use medium to hold back discharge to be opposite gas collosol beforehand effect of fractional distillation of the element after ionization is able to restrain effectively.

在ArF准分子激光(193 nm)和Nd∶YAG固体激光(213 nm)两种不同波长的激光剥蚀系统中，元素分馏因子均比常规模式下更接近于1，表明采用介质阻挡放电对气溶胶预电离后元素分馏效应得以有效抑制。

Carbonate rocks are susceptible to later recrystallization during deep burial, and can isotopically re-equilibrate with higher-temperature fluids depending upon the water/rock ratios and the isotopic composition of the fluids.

碳酸盐岩在深埋过程中很容易被后期的重结晶作用影响，并且在高温流体的加入时发生同位素的分馏，这种分馏与水/岩比率以及流体同位素的组成相关。

Topological optimization system of variable density method based on finite element software;2. Interface depths inversion of potential field data with variable density model;3. According to the characteristics of the cold insulation box of Fractionating tower, it is considered that the effect of inner-filling on the construction is related with the variable density, then the relative formulation in the condition of n.

根据分馏塔保冷箱的特点，认为内填料对结构的作用与变密度有关，推导了无水平位移下的相关公式；对此结构在有水平位移下内填料的发育进行仿真分析，并将内填料的作用与结构的楼层柱的旋转角建立联系；最后根据得到的结论对分馏塔保冷箱在风与内填料作用下进行了非线性分析，得到结构的极限承载力。

A series or criteria of recognizing tin-bearing granite is set up by collecting the data on related petrology, mineralogy, geochemistry, trace elements, transitional ele ments, incompatible elements and rare earth elements.

黑云母花岗岩对成矿的贡献有两个突出的方面：其一是其在重熔生成演化过程中，经高度分异作用，将原各地质体中的锡多金属元素分馏富集，为成矿奠定了一个良好的基础。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。