结晶

The area ratios of 980/1022, 980/1047,(980+1047)/1022 and 980/(1022+1047) cm^(-1) were decreased as the degree of acetification increased which indicated that acetification induced a decrease of crystallinity of starch. And the crystal structure changed from A-type to V-type. For the cross-linking of POCl3, the area ratios of 980/1022, 980/1047,(980+1047)/1022 and 980/(1022+1047) cm^(-1) were also decreased as the degree of cross-linking but the decrease was little compared to that of acetification. The result indicated that cross-linking of POCl3 had little effect on the starch crystal structure.

随着醋酸酯化取代度的增大，980/1022、980/1047、(980+1047)/1022和980/(1022+1047)的相对峰面积的比值均呈现下降趋势，表明醋酸酯化改性会导致淀粉结晶程度降低，结晶形态从A型转变为V型；随着交联度的增大，980/1022、980/1047、(980+1047)/1022和980/(1022+1047)的相对峰面积比值均呈现下降趋势，但下降程度较小，表明三氯氧磷交联对淀粉结晶结构影响不明显。

Mono-calcium phosphate, sulfuric acid and urea were used for simulating the crystallization of calcium sulfate in the reaction of phosphate rock and urea-sulfuric acid.

结果表明，与无尿素的结晶过程相比，尿素使出现结晶的时间延长了150%，但悬浮液密度增加50%，结晶在长度和宽度上均有所增加，特别是宽度上的增长超过50%。

The densities of recrystallization textures were higher in samples, which were recovered at low temperature and then heated by laser, than that of unrecovered.

加热速度能改变再结晶有效激活能从而改变再结晶进程，使依赖于再结晶机制的再结晶织构的形成亦受到影响。

The microscopic examinations of sediment demonstrated RBC urine in 46 cases (50%),RBC morphology was homogenerous type under the light microscope; WBC urine in 33 cases (35.9%), of which cultures for microorganism in 12 cases were all negative; crystal urine in 14 cases (15.2%), of which noncrystal type crystal was identified in 12 cases, while calcium oxalate crystal in 2 cases.

沉渣镜检：红细胞尿40例，占50%，普通光镜下观察红细胞形态为均一型。白细胞尿33例，占35.9%，干化学、沉渣镜检阳性符合23例，其中12例尿培养未检出致病菌。结晶尿14例，占15.2%，其中12例非晶型结晶有4例按混浊尿鉴别程序确定为非晶型尿酸盐结晶；另2例为草酸钙结晶。

The selected process consists of several steps as follows. Firstly, ammonifying the oily mixture of PXA pyrolysis by ammonia or aqueous ammonia, then adding the organic solvent to extra

实验结果表明，合适的分离提纯工艺为：先将裂解产物用氨水氨化、有机溶剂萃取，然后用硫酸酸化11-CUA铵盐水溶液、再将粗品11-CUA于合适介质中结晶，得到高纯度11-CUA晶体；优化工艺条件为：氨化pH值8.0～10.0、温度25-35℃，甲苯为萃取剂，酸化pH值1.5～2.0、温度55-60℃，环己烷为结晶介质，粗品11-CUA在环己烷中溶解温度50～55℃、与环己烷初始质量比4：100、结晶前沉降分层时间10min、结晶温度20℃。

A water model for simulation of 1050 mm mold is established to investigate the effects of SEN structure, casting speed, immersion depth and other parameters on the fluctuation of the liquid level in the mold, the impact depth of the steel stream and entrapping of the flux, and compare the influence of different structure parameters and operating parameters on the flowing field in the mold in order to find out the best suitable compromise between the structure parameters and the operating parameters and then...

针对 10 5 0mm× 15 0mm断面的结晶器，建立了水模型，研究浸入式水口结构、拉速、浸入深度等工艺操作参数对结晶器液面波动、流股冲击深度及结晶器钢液面保护渣卷入情况的影响，比较不同水口结构参数及操做参数对结晶器内流场的影响，从而找出结构参数与工艺参数间配合最佳的工况，为水口设计提供理论依据，并经优化的水口在实际中应用，使安钢第二炼钢厂的板坯退废率由 1.5 0 %降为0 。6 %。

How to put these characteristics into the practical application to conduct the design of the mould and the plasticizing system of the injection molding m.

介绍结晶性塑料在注塑过程中的塑化特点、取向与结晶的关系及其对制品性能的影响，注塑参数对结晶性塑料塑化、取向、结晶的影响。

Through comprehensive comparison,during the growth from 1 age-degree bamboo to 2 age-degree bamboo,density, mechanical strength(except maximum tensile strength etc.),fraction of bundle sheath,cell wall ratio,crystallinity,cellulose content and lignin content increase rate are the greatest.3age-degree bamboo has higher strength,strength and gravity ratio andcrystallinity are the biggest,fraction of parenchyma is small and insect-resistant.2 degree bamboo has the greatest mechanical strength,but its strength andgravity ratio is not the highest and its crystallinity is lower than 3 age-degreebamboo due to its greatest fraction of parenchyma,loss tangent value is thebiggest.Its creep character is not good and is easily eaten by moth.

通过综合比较，竹材从1度竹到2度竹生长过程中，密度、力学强度、纤维束比量、胞壁率、结晶度、纤维素含量、木质素含量等指标增加幅度是最大的。3度竹强度较高，强重比、结晶度最高，薄壁组织含量较小，相对抗虫蛀，材质最好，适合材用。4度竹结晶度下降引起强度的下降，但薄壁组织组织比量最小，相对最抗虫蛀。2度竹力学强度最大，但是强重比并不是最大，结晶度比3度竹低，由于薄壁组织组织比量最大，内耗值最大，蠕变性能较差，同时相对易遭虫蛀。

Ton large anhydride reaction device and 25m3 anhydrous glucose crystallizer have been listed in national key product program respectively in 2000 and 2003, and forced circulation vacuum evaporating crystallizer has been listed in the 2003 Innovation Fund Program by the Ministry of Science and Technology.

本项目中的2万吨大型反应装置、连续结晶器及强制循环真空蒸发结晶器均通过了国家鉴定和科技部组织的专家评审，2万吨大型苯酐反应装置、25m3无水葡萄糖结晶器被列入2000年、2003年国家重点新产品计划，强制循环真空蒸发结晶器装置被科技部列入2003年创新基金计划。

DSC measurements indicate that the crystallizing temperature and the melting temperature of the three-arm star-shaped polyethylene glycol were different from those of the corresponding linear PEG because the existing of TMP-SK3 altered its crystallizing velocity and the perfect degree of crystals.

DSC测试结果表明，与线型聚乙二醇相比，三臂星型聚乙二醇由于TMP-SK3核的存在，不仅影响聚乙二醇的结晶速度，同时也影响结晶的完善程度，导致其结晶温度和结晶熔融温度发生变化。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。