变晶的

Analytical results of differential scanning calorimetry DSC and X-ray diffraction XRD indicated that after compression molding,the melt temperature of PLLA crystals decreased while the degree of crystallinity increased.

差示扫描量热DSC分析和X-射线衍射XRD分析表明PLLA模压成棒后，PLLA的结晶熔点下降，微晶尺寸变小，而结晶度增大。

The growth of the porphyroblasts of andalusite and cordierite is of similar process.

红柱石、堇青石变斑晶中也有类似的生长过程。

C3 symmetry operation is regarded as a transformation operator in angular momentum representation and the crystalline potential in Oh symmetry can be simply derived.

将C3对称操作看作角动量表象的对称变换算符，推导出Oh对称性晶场势。

It is suggested that the change of cooling curve is due to the facs that:(1) the ...

所有这些是由于超声波在金属中传播时，声能变热能和使欲凝固分子做平行于結晶面振动的結果。

The results show that upper bainite and grain boundary segregation of Si element result in embrittlement of the oil cylinder.

结果表明，上贝氏体和Si元素的晶界偏聚导致油缸变脆。

The ratio of the green emission intensity to the red one for the lead fluosilicate glass ceramics decreases evidently, while it is almost a constant for the lead fluosilicate glass.

随着激发功率的增加，绿、红上转换强度比在氟硅铅酸盐微晶玻璃中显著减小而在氟硅铅酸盐玻璃中近似不变。

Use variation 2, running the lacing at a steeper angle to create a four-way lattice.

使用变式2 ，运行花边在陡峭的角度建立一个四路晶格。

The deformation mechanism is mainly the single-slip and cross-ship, the fracture mechanism is mainly the congregation of transgranular micro-hole, and large uniform deformation occurred before tough fracture, and therefore, the ability of plastic deformation and the mechanical properties of the material were remarkably improved. These fully indicate that the new melt-treatment developed in this work is an effective and advanced technique, and further testify that the improvement of metallurgical quality of the material is the key to enhance its mechanical properties, especially its plastic deformation performance. The results of tensile and compression tests at elevated temperature also indicate that the suitable hot-working temperature range is 400～450℃. 4. A steady-state plastic flow exists during the plastic deformation of the aluminum sheet used for pressure can at elevated temperature. A hyperbolic sine relationship can be satisfied between the steady-state flow stress and strain rate by introducing an Arrhenius term which involves some thermal activation parameters, i.

压力罐用铝材中的主要冶金缺陷为Al〓O〓夹杂物、气孔及富Fe杂质相；高效熔体处理显著改善了材料的冶金缺陷的存在形态，使含杂量明显减少、夹杂物尺寸变细小且分布均匀，富Fe杂质相变为细小、分布均匀的团球状或短棒状的复杂化合物，同时也明显细化了结晶组织；此外，由于高效熔体处理有效地减少了材料中裂纹萌生源数量，因而改变了材料的塑性变形微观过程及断裂方式，主要以单滑移和交滑移进行塑性变形，断裂方式为穿晶微孔聚集型，韧性断裂前产生了大量的均匀变形，不易出现变形失稳，从而显著提高了罐用铝材的塑变能力和力学性能。

T curve of the corresponding solvate trends towards the lower temperature A linear relationship was observed between the mol. vols. of the monohalogenated benzene and the Tc values of the corresponding solvates, with the only exception being the chlorobenzene analog. This anomaly is attributed to a first-order phase transition occurred around 185 K, which coincides with the Tc value of this solvate.

特别在单卤代苯系列中，溶剂的分子体积与Tc值呈线性关系，但氯苯溶剂合物是例外：后者的反常现象主要是由晶格内部的Tc≈185K时伴随发生了与自旋变异协同的一级相变所造成，这个相变过程已为示差扫描量热测定和Mossbauer中心位移对温度的曲线呈现的不连续性所证实。

The molecular motion of amorphous region at high-frequency was found to be hardly affected during the stretching processes. In summary, elongation has created major but different influences on the morphology and molecular motion of the aforementioned four series of polymeric elastomers. For those elastomers like natural rubber and poly , elongation has induced crystallization of the noncrystalline or the soft segments. The crytallinitiy and the crystal thicknesses increase monotonously during the course of the stretching; On the other hand, the stretching processes for those semicrytalline copolymers like EMA and POE are rather complex, including the formation of crystal at relatively low λand the destruction of the crystal at the utmost λ. It revealed that stretching process has resulted in a decreasing of the thicknesses and a shortening of 〓C T〓s for the orthorhombic crystalline components.

拉伸对上述四个弹性体体系的聚集态结构都产生了很大影响，但是影响的程度和内容因体系而不同，对于本身存在着化学交联或者是物理交联的体系而言，拉伸导致了其中本来难以结晶组分的结晶，且结晶度随着拉伸比增加而增加，与此同时，体系结晶的晶片厚度也会逐渐增加；而对于结晶性共聚物体系，如EMA和POE，结晶区本来起到了物理交联的作用，在这种情况下拉伸的影响变得比较复杂，拉伸对于不同晶型的影响有所不同，在拉伸比较低的情况下体系总体的结晶度会有所增加，说明有新的结晶产生，当接近或达到断裂伸长比时，体系的结晶度会突然降低，含量占优的结晶会被拉伸所破坏，含量较低的结晶在整个拉伸过程中受的影响较小。

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。