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The results show that the addition of certain manganese in high chromium cast iron leads to a re-partitioning of alloy elements between austenite and carbide and a dropping in equilibrium phase transformation temperature although it＇s inappreciable for the influence of manganese on mass fractions of every phase in this cast iron. There is about 87 percent ledeburite under thermodynamic equilibrium condition and 23 to 32 percent M7C3 type carbide under thermodynamic non-equilibrium condition in the microstructure of 3C-15Cr-4Mn-0.75Si system high chromium cast iron. Furthermore, the improvement of austenite stability and hardenability of manganese alloyed high chromium cast iron may been expected because there is a substitution between manganese and chromium that has been suggested by thermodynamic calculations.

结果表明，锰虽然对高铬铸铁中的各相数量影响不大，但一定数量的锰存在促使合金元素在奥氏体和碳化物两相中的重新分配，并降低平衡相的转变温度；在平衡条件下3C-15Cr-4Mn-0.75Si系高铬铸铁中莱氏体数量约占87％，而非平衡条件下M7C2型碳化物数量在23％～32％之间，且奥氏体中锰铬互替现象保证了奥氏体的稳定性和加锰高铬铸铁的淬透性。

To ensure an optimal separation, three fractions should be collected: the limonene fraction, an intermediate fraction that forms during the rapid increase in temperature after collection of the limonene fraction, and the carvone fraction.

应该收集三个馏份以确保理想的分离效果：柠檬烯馏份，收集柠檬烯馏份后快速升温所产生的中间馏份以及香芹酮馏份。

The results showed that the mass fractions of Fe and Ni in the coating were 61.8%-62.1% and 37.9%-38.1%, respectively, similar to those of invar alloy, and the coating was solely composed of nanocrystalline γ solid solution.

验证性实验结果表明，制备的镀层具有与因瓦合金相似的成分，其Fe和Ni质量分数分别为61.8%~62.1%和37.9%~38.1%，它是由单一的纳米晶γ固溶体组成。

It is found that the coexisting curves of the temperatures versus the volume fractions of water, cyclohexane and diethylene glycol monobutyl ether are respectively inverse "S" type curve, positive "S" type curve and "knot-shape" curve.

用改进的相体积法测定了水－环己烷－二乙二醇丁醚三元体系的相平衡，给出了不同温度下平衡共存三液相的体积分数及平衡共存三液相的相密度的共存曲线。

Simultaneously, when the volume fractions of coexisting three-liquid-phases are converted into mass densities, it is also found that the coexisting curve of temperatures versus mass densities of phases is also standard inverse "S" type curve.

实验结果表明，在平衡共存三液相中，水、环己烷和二乙二醇丁醚的体积分数随温度改变的变化曲线分别是倒"S"型，正"S"型，"结"型；将共存三液相的体积分数转化为对应的相密度后，相密度随温度改变的变化曲线也是规整的倒"S"型；而且，3条"S"曲线形状均表现出不对称的特性。

The scatter fractions calculated by Monte Carlo simulations were found to be in good agreement with the ionization chamber results measured by other

应用所建立的PhanScatter蒙特卡罗应用程序可方便地研究探测平面上散射线的各种物理特性，并获得了准确可靠的数掘。

Hydrocarbon structural-group components in the hydrotreating of residual oils The residual oils were preseparated into 4 fractions by alumina/silica serial column A method for measuring the hydrocarbon structural-group components in saturated fraction, aromatic fraction, and resin fraction of residual oils was established using low resolution, high ionization voltage mass spectroscopy.

渣油加氢处理过程烃类结构族组成变化研究采用氧化铝/硅胶串联柱对渣油样品进行四组分预分离，建立了低分辨、高离子化电压质谱测定渣油饱和烃、芳烃和胶质组分烃类结构族组成的方法。

The osmotic coefficients and saturated vapor pressures have been calculated at the different temperatures .The experimental values of the osmotic coefficients for the Li_2SO_4-H_2O system were consistent with the values in the references. The results revealed the rules of the changing in osmotic coefficients and saturated vapor pressures with ion strengths and the molality fractions of Li_2B_4O_7 at different temperatures. The isopiestic equilibrium molalities were correlated by using the modified and the extended Zdanovskii rules for non-ideal mixtures, and obey well the Zdanovskii rules. The ion interaction parameters of Pitzer model have been determined by using the two methods for Li_2SO_4-Li_2B_4O_7-H_2O at 298.15K system.

本文计算了不同温度下该纯盐体系和混合盐体系的渗透系数和饱和蒸汽压，并将298.15K下的纯盐溶液渗透系数的实验值与文献值进行比较，取得了相一致的结果；揭示了不同温度下渗透系数和饱和蒸汽压随离子强度及Li_2B_4O_7质量摩尔浓度分数yb的变化规律；本文用Zdanovskii规则修正式和扩展式关联了298.15K下该混合盐体系的等压平衡浓度之间的关系，计算结果表明用这两个方程可以描述该体系在全浓度范围内的等压平衡浓度间的关系。

The poison activity, stomach toxicity action and nonselective food refusal activity of extracts and fractions obtained by extracting the stem of Mirabilis jalapa L against the 4th instar larvae of Pieris rapae L, with 3 polarity solvents（petroleum ether, chloroform and ethanol）were determined by the methods of feeding, leaf-sandwich and leaf dish.

用饲喂法、叶片夹毒法、叶磲法测定了紫茉莉茎的3种极性溶剂提取物及萃取物对菜粉蝶幼虫的毒杀活性、胃毒作用、非选择性拒食活性。

A long-term field experiment was carried out in Jilin province to study the effect of fertilization on the total content of soil organic carbon fractions and the soil Kos value in black soil.

通过长期定位试验研究了施肥对黑土有机碳总量、组成、品质的影响。

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。