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In this paper, arrangement scheme of a novel multi-star phase shifted pole changing coil was given and the methods to determine coil split ratio were analyzed. According to electromagnetic theory, 2D electromagnetic mathematical model in which stator windings were spitted coil was developed, and magnetic field distribution of the novel motor at starting was solved by finite element method, starting performance of motor was calculated. Based on energy method, rotor slot leakage reactance under different poles and different loads were calculated, and the variation of rotor slot leakage reactance with loads was gotten. Based on time-step finite element method, distribution of branch current in stator windings and operating performance were calculated and analyzed when branch was unbalance, the method to calculate circulating loss in stator windings of novel multi-star phase shifted pole changing motor was given, and the effects of the loads variation and degree of unequilibrium on circulating loss in stator windings were calculated and analyzed.

论文系统的给出了采用分裂线圈法新型多星形移相变极绕组的排列方案,进一步分析线圈分裂比的确定方法;根据电磁场理论,建立了定子为分裂线圈绕组的电机二维电磁场数学模型,并采用场路耦合法求解了新型多星形移相变极电机起动时的磁场分布,计算了电机起动性能和基于能量法计算了不同极数下起动时转子槽漏抗和不同负载时转子槽漏抗,得出转子槽漏抗随负载变化的规律;采用时步有限元法计算分析了定子绕组支路不平衡时支路电流的分布情况及运行性能,给出了新型多星形移相变极电机定子绕组环流损耗的计算方法,分析比较了负载的变化和支路不平衡度大小对定子绕组环流损耗的影响。

The peak of lesion sporulation appeared on the 27th day. The most suitable temperature for sporulating was 24℃. If relative humidity was lower than 88%, the lesion could not sporulate. Between 90% and 100%, the higher the RH was, the higher sporulation was. If continuous humidity time was lower than 5 h, the lesion could not sporulate. Between 7 h and 24 h, the longer it was, the higher sporulation was.

病斑产孢潜能高峰在日龄27d,产孢最适温度为24℃,相对湿度在88%以下,病斑不能产孢,在90%~100%范围内,随相对湿度增加产孢量急剧增加,在连续保湿5h以下,病斑不能产孢,在7~24h范围内,时间越长,产孢量越大。

The experiment results indicated that the cross-linking mechanism of hydrogenated terpinene maleic anhydride with bisphenol A epoxy resin was similar to anhydride curing with epoxy resin in the presence of accelerants. The curing degree was increasing as the curing temperature was arisen and the curing time was delayed, and the gelation time was shortened obviously as the curing temperature was arisen and the dosage of accelerants was increased.

实验结果表明:HTMA与环氧树脂的固化反应过程与促进剂作用下的酸酐固化环氧树脂的交联反应机理一致;固化度随温度升高、时间延长而提高,而凝胶时间随温度升高、促进剂用量的增加明显缩短。

Tray soilless culture evolved by the nutrient flow technology in which there was only a layer of nutrient liquid and the oxygen was very enough was designed to improve the effect of wastewater purified by the terraneous It was showed that when the height of the tray was 1cm, and six layers of clothes were laid on the tank to filtrate and hold wetness the wastewater, furthermore, the gradient of the tank was between 2 and 8, the tray soilless culture was the most feasible.

为了提高陆生植物净化废水效果,根据仅有一层营养液流过栽培容器的底部而使供氧条件大大改善的营养液膜技术衍变而设计一种栽培方式即育苗盘种植。试验研究表明,最适的盘培方式为育苗盘高度为1cm,栽培槽上再铺设6层无纺布用于养鱼废水的过滤、保湿,另外,栽培槽的坡度设计在2%—8%之间。

The effects of solution\'s pH value, mol ratio between phenyl aldehyde and L-Arginine, concentrations of sodium chloride, ammonia chloride andL-Lystine, initial concentration of L-Arginine on precipitation rate of a -tolylene arginine were investigated, the results indicated that phenyl aldehyde precipitation method\'s appropriate pH value was higher than 11, suitable mol ratio between phenyl aldehyde and L-Arginine was 1.25, initial concentration of L-Arginine was must higher than 15g/L, sodium chloride had little effect on precipitation rate, on the contrary, ammonia chloride and L-Lystine had great effect on it, both of them must be eliminated; At the same time, adsorption isotherm at 25 C of L-Lystine on anion exchange resin A was measured, the result showed that the maximal equilibrium adsorbance was 30mg/g, the influences of solution\'s pH value, temperature, concentration of chloride ion on adsorption of L-Lystine by anion exchange resin A were also studied, the results indicated that appropriate operational pH value was 0.5 0.2, the effect of temperature on adsorption ratio was little, process could be operated at room temperature, the concentration of chloride ion must be eliminated.

考察了溶液pH值、苯甲醛与L-精氨酸摩尔比、氯化钠与氯化铵浓度、L-赖氨酸浓度、L-精氨酸初始浓度对苯甲醛沉淀L-精氨酸的影响,结果表明,沉淀反应的适宜pH值大于11,苯甲醛与L-精氨酸的适宜摩尔比为1.25,(来源:Aa6BC论文网www.abclunwen.com)L-精氨酸适宜的初始浓度在15g/L以上,氯化钠的存在对沉淀率基本上没有影响,而氯化铵和L-赖氨酸的存在使沉淀率下降;同时测定了25℃时阴离子交换树脂A吸附L-赖氨酸的吸附等温线,表明其最大平衡吸附量为30mg/g,考察了溶液pH值、温度、氯离子浓度对阴离子交换树脂A吸附脱除L-赖氨酸的影响,结果显示从L-精氨酸和L-赖氨酸混合液中吸附分离出L-赖氨酸的适宜pH值为10.5±0.2,温度对L-赖氨酸吸附率影响不大,吸附过程可在室温下进行,氯离子的存在使L-赖氨酸的吸附率降低。

According to the nutritional needs of B.bifidum,based culture and stimulated factors were optimized by quadratic design.The optimum based culture was as following: yeast extract was 0.9%,tryptone was 0.3%,soya peptone was 0.3%,glucose was 2.0%,bifidus was 0.8%,growth factor was 10%.

针对两歧双歧杆菌的营养需要,采用正交试验设计优化增殖培养基,结果表明,酵母膏是影响短双歧杆菌的显著因素,最佳的优化培养基配比是:酵母膏0.9%,胰蛋白胨0.3%,大豆蛋白胨0.3%,葡萄糖2.0%,双歧因子0.8%,生长因子10%。

The output power could be adjusted with the change of control voltage, and the reflecting power could be gotten by measuring the output voltage of attenuator and detector. 4.The thrust measurement device was calibrated, and the accuracy was 2%FS. At the same time the signal of thrust measurement was input to the computer. E-type chromel-constantan thermocouple was used to measure the temperature of MPT, and the accuracy was 5%FS.The vacuum measurement was realized by using ZDF-5427M vacuometer, and the accuracy was 3%FS.

4对推力测量系统进行了标定并实现了计算机采集,推力测量系统最大相对误差为2%FS;温度测量目前还只限于对MPT谐振腔壁温的测量,使用E型镍铬—康铜热电偶即可较容易实现,其测量精度为5%FS;真空测量采用ZDF-5427M微机型复合真空计,其由热偶计和热阴极电离计复合而成,该真空计测量控制精度为3%FS。

The intensity ratio of TO and LO inMCT was observed to be different. Such difference was explained in terms of the different Ramangeometry arrangement.〓. The laser-induced micro-photoluminescence in the range of 1000~5000〓(1.34eV~1.83eV) was found for the first time in LPE MCT epilayer. The center of photoluminescence wasat 2750〓 or 1.62eV and the FWHM of luminescence was 2000〓 or 0.25eV. We assume thatthe photoluminescence is due to recombination of electron from an anion vacancy resonance levelto the top of valance. In addition, new Raman shift was observed at 750〓 in LPE MCTepitaxial film.〓. The laser-induced micro-photoluminescence with quasi-periodic structure was observed forthe first time at room temperature in one of MOVPE MCT epitaxial film samples. The range offluorescence was from 1.46eV to 2.21eV, i.e., 1.73eV above the conduction band edge.

2首次在LPE生长的碲镉汞外延薄膜的显微Raman谱中,在1000~5000〓范围发现了激光激发显微荧光,该荧光的发光范围换算为电子伏特标度为1.34eV~1.83eV,荧光的发光中心大约位于2750〓,即1.62eV,发光的半峰高宽约为2000〓或0.25eV;指出该显微荧光来源于碲镉汞薄膜中的阴性离子空位共振能级的激光激发发光;观察到了碲镉汞外延薄膜中一个新的Raman散射峰,位于750〓位置; 3首次在一块用MOVPE方法生长的〓Te外延薄膜的显微Raman谱中,发现了1.46eV至2.21eV范围并伴随有周期结构的显微荧光峰,该发光峰对应的能带中心位于〓Te材料导带底上方1.73eV,通过研究得出样品在1.46eV至2.21eV范围的显微荧光峰是由于改进 MOCVD 生长工艺,提高了碲镉汞外延薄膜的结构质量所致;通过分析指出该显微荧光来源于外延层中的阴性离子空位的共振能级发光。

The sizes of the self-assembly micelles of the amphiphilic block copolymers and the effects werestudied by dynamic light scattering and UV-visible spectrophotometer. The micelle sizes werelargely influenced bythe hydrophobic chain content in the copolymer, the properties of the solvent and the copolymer concentration in the organic phase. The morphology of the micelles was investigated by transmission electron microscopy. Theresults showed that the micelles appeared spheres with inner core and outer shell. The critical association concentrations were determined by pyrene monomer fluorescence probe technology. The degradability of copolymer was studied by the loss of the intrinsic viscosity in the degradation process. The results indicated that the degradation rate of PECL was slower thanthat of PELLA and PEDLLA. The stability of the copolymer micelle dispersion was examined by measuring the critical flocculation concentration, which gradually decreased with increasing the content of thehydrophobic chain in the copolymer. The rheological results showed thatthe viscosity ofthe micelle dispersion with higher content of PEG segments was firstly decreased and then increased with the increasingthe temperature. Otherwise, the variation of viscosity was irregular. The viscosity of the micelle dispersion increased with the increase of the electrolyte (Na 2SO 4) concentrations. Polymer micelles paclitaxel was prepared by self-emulsification/solvent evaporation method and solid dispersion technique with amphiphilic block polymers as the carrier material.

运用动态光散射和紫外分光光度计研究了两亲性嵌段共聚物自组装胶束的粒径及其影响因素,结果表明,自组装胶束的形成机理受制备方式的控制,胶束的粒径随着共聚物相对分子质量或疏水嵌段相对分子质量和有机相中共聚物浓度的增大而增大,随着有机溶剂的水溶性的增强而减小;采用透射电镜观察胶束的形态结构,发现胶束呈具有核壳结构的均匀球形;采用芘荧光探针法测两亲性嵌段共聚物的临界聚集浓度;通过降解过程中共聚物特性粘度的变化研究两亲性共聚物的降解性能,发现与PELLA和PEDLLA的相比,PECL 降解速率较慢;随着共聚物中疏水嵌段含量的增大,纳米分散液的稳定性逐渐下降;PEG含量高的PEDLLA纳米分散液随着温度的升高,纳米分散液的粘度先下降然后增大,反之,没有规律性,且随着电解质Na 2SO 4浓度的增大,体系粘度增大。

Results The cause of spleen damnification was spleen tumefaction,spleen was tightly conglutinated,spleen-stomach ligament was shorter,position of cut was not appropriate,the corner of rib was smaller,operation was not fine,anaes-thesia was ineffective,mentality and experience were not ripe.

结果 脾肿大、脾周粘连、脾胃韧带过短、手术切口过小、患者生理性两侧肋缘夹角较锐、麻醉效果不良、术者求速手术心理、手术操作较粗暴、手术经验不足等是造成脾损伤的主观和客观原因。

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推荐网络例句

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力