同质多晶

Using p-T pseudosections with contours of H20-contents, the medium-low pressure metamorphism for pelite from the Altai orogen was documented. We proposed that the andalusite-type metamorphic zones in Altai were related to the uplifting of kyanite-type zones and are characteristic of isomorphic transformation between aluminosilicates. Generally, it is difficult for the low-pressure metamorphic assemblages to reach an equilibrium state.

利用p-T视剖面图和饱和水含量等值线的行为研究阿尔泰造山带泥质岩石的中低压变质作用发现，阿尔泰地区红柱石型变质带的发生与蓝晶石型变质带的抬升有关，主要发生铝硅酸盐矿物之间的同质多相转变，低压变质矿物组合未能达到热力学平衡状态。

It is found that there is a mineral association, micro-crystal muscovite and phengite, in this deposit. The mineral assemblage contains about 80% micro-crystal muscovite and about 20% phengite. Their crystallinity is very high and their polytype is 2M1. Both of them are dioctahedral because the d and b of micro-crystal muscovite and phengite are 0.1502 nm, 0.9012 nm and 0.1505 nm, 0.9030 nm, respectively. For their d and b are larger than those of common muscovite, the reason why Fe(superscript 2+)+Fe(superscript 3+) and Mg(superscript 2+) are high in the ore is that Al(superscript 3+) in the octahedron is replaced by Fe(superscript 2+)+Fe(superscript 3+) and Mg(superscript 2+), and this is a phengite series mineral association formed through isomorphic replacement.

该矿物组合中的微晶白云母和多硅白云母结晶度高，多型为2M1，其含量分别为80%和20%左右；二者都属二八面体型白云母类矿物，但d060和b值偏大，微晶白云母的d060=0.1502nm，b=0.9012nm，多硅白云母的d060=0.1505nm，b=0.9030nm；微晶白云母矿铝含量较低、铁镁含量较高，其原因是白云母晶体铝氧八面体中的Al离子被Fe、Mg等离子所取代，这一矿物组合是通过矿物类质同象作用所形成一种多硅白云母系列矿物。

And kyanite, sillimanite as Al2SiO5 of polymorph variants. Orthorhombic.

与蓝晶石、矽线石为Al2SiO5的同质多象变体。

The characteristics of cryptocrystalline magnesite ore in Bameng Magnesite Mine were discussed.

论述了巴盟菱镁矿的特点，隐晶质菱镁矿多为热液交代型超基性岩类矿石，其基质致密坚硬，微细嵌布，杂质含量高，且有广泛类质同象，难以实现矿物单体解离，实际分选困难较大。

This project is going to investigate the crystallization of polymers in scCO2 and to study the polymorphism and solid-phase transition of crystallizable polymers with different molecular structure and different tacticity in scCO2 for accumulating the fact of crystallization of polymers in the titled surrounding, revealing the rule of solid-phase transition of polymers in scCO2 and exploring the mechanism responsible for these phenomena.

本项目研究聚合物在scCO2中的结晶行为，研究不同分子结构、不同等规程度聚合物的同质多晶现象与固相转变，积累现象、寻找规律、探求机理。

This dolomite is euhedral rhombic form of very finely crystalline(6-18μ)with zonal texture.

白云石为菱形极细晶，具环带构造；有较多的Fe~取代Mg~形成类质同象。

SiC polytypes of 6H and 15R and a transition zone between the two were observed under HREM and TEM and discussed from the point view of the crystal structures; the clear evidence of Al〓C〓 nucleated in the SiC particle was provided, indicating the aluminum penetrating the SiC grains is already carbon-saturated and, consequently, Al〓C〓 crystals grow in the particles wherever a temporary local supersaturating is produced; The experimental observation indicated that the types of the interface between SiC and Al are variable and the distribution feature of reaction product, Al〓C〓, were also given in the present work: to be nucleated on SiC, to be aggregated at SiC/Al interface zone or to be aggregated at the crystal boundaries.

通过高分辨透射电镜，本文观察到SiC增强体中6H和15R同质多晶现象及6H-15R SiC转变区，以及另外一种无序的SiC同质多晶，并从其晶体结构的角度解释了6H和15R在晶体内共存的现象。通过高分辨透射电镜，本文给出了Al〓C〓在SiC颗粒内部形核的明证，表明Al〓C〓形核是Al渗透到SiC颗粒内部在C过饱和处在SiC的（0006）面上而形核，而且一种可能的位相关系为A1〓C〓[11〓0]∥SiC[11〓0]。研究结果同时给出了SiC/Al复合材料的界面反应产物A1〓C〓的分布特征：在SiC上形核并生长，聚集于SiC/Al界面去附近，或者聚集于晶界上。

Because solid fat has polymorphism and special composition, it can bind liquid fat. Beef tallow was added into oil phase to improve the stability of artificial beef fat. Third-grade soybean oil took the place of plant oil iii proportion to improve the color of beef fat.

在前期研究的基础上，通过在油相中添加牛油，应用油脂的同质多晶型特点及牛油的特殊组成来提高肥牛脂肪的稳定性；用一级大豆油与三级大豆油适当调配，来改善肥牛脂肪的颜色。

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。