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The effect and its mechanism of temperature during grain filling on rice quality were investigated by using 4 eary-indica rice cultivars with different quality and amylose content. The plants at filling stage were transferred into two phytotrons (Model PGV-36, CONVIRON, Canada), which were set two mean daily air temperatures, i.e. 22℃, optimum temperature regime and 32℃, designed as high temperature regime. The differences in quality properties and starch characteristics of rice between two temperature regimes were determined, and effects of temperature at grain-filling stage on starch biosynthesis in developing rice grains were also analyzed.

本研究以田间异季栽培试验为基础，利用人工气候箱(PGV-36型，CONVIRON)设高温(日均温度32℃)和适温(日均温度22℃)两个典型温度处理，在日温差、光照、相对湿度等因素完全一致的条件下，系统地研究了水稻灌浆结实期不同温度对早籼稻米淀粉的DSC热力学特性、RVA粘滞性、晶体结构、淀粉链长分布等理化指标的影响及其品种类型间的差异，并分析了水稻籽粒淀粉合成代谢过程中几个关键酶的温度效应特征及其与稻米淀粉合成和积累的关系。

With rice cultivars Yangdao 6and Wuyujing 3 as test materials, the effects of relatively high temperature (RHT, mean temperature 30 ℃) at grain-filling stage on the starch viscosity profile and magnesium and potassium contents of rice grain were studied in a phytotron. Four temperature treatments were installed, i.e., RHT at whole GFS, RHT at early GFS and optimum temperature at later GFS, optimum temperature at early GFS and RHT at later GFS, and optimum temperature (CK, mean temperature 23 ℃) at whole GFS.

选用武育粳3号和扬稻6号两个水稻品种，利用人工气候室在水稻灌浆结实期进行控温试验，设置全结实期相对高温、结实前期相对高温、结实后期相对高温、全结实期适温（对照，日均温23℃）对照4个处理，探讨结实期不同时段相对高温（日均温度30℃）对稻米淀粉粘滞性谱和Mg、K等元素含量的影响。

With positive approach, this paper analysed grain price raising influence on the grain market equilib rium, social economic walfare, and social equity and studied the substitute effect of price-raising from the sides of both the producers and consumers.

用实证的研究方法分析了1994年粮食提价对粮食市场的均衡、社会经济福利、社会公平等的影响，并从生产者和消费者两方面考察了价格提高的替代效应和收入效应。

And the strengthening mechanism can be described as follows: WC cemented carbides have interlaced short-clubbed grain, and in the bend strength test, the microcrack generates at WC/WC grain boundary, and may be blocked by interlaced fine-clubbed grains during extending, which induce the intergranular pulling-out. Due to the pulling-out mechanism, fracture-extend energy is greatly expended, thus bend strength is increased. The wear mechanism is groove wear and spalling of WC grains.

热机械合金化合成的WC-Co硬质合金比传统方法制备的同类WC合金具有更高的强度，其机理是：热机械合金化合成的WC合金具有交替排列的短棒状组织，在三点弯曲试验中，微裂纹萌生于WC/WC晶界位置，受到交错排列的短棒状晶粒的阻碍，裂纹扩展以短棒状晶粒的拔出方式进行，极大地消耗了裂纹扩展的能量，从而提高了弯曲强度；合成试样的摩擦磨损过程以犁沟磨损和WC颗粒的剥落为主要特征。

The results shows that the flow characteristics of SiC-AlN granulated powder is obviously promoted after spray drying and a suitable particles grade match. With the increasing of pressure, the density of green body increases by the style of ladder at the pressure range of 4080 MPa, 80160 MPa and 160220 MPa, the green body is uniform and densification without hard pelleted particles above 160 MPa. The pressureless sintering SiC-AlN multiphase ceramic possesses superior sintering properties and mechanical properties. It is due to the rampart formation of AlN to SiC grain growth and the reaction of SiC and AlN to form 2H solid solution. It results in the grain fining, crack expansion producing bypass and deflection, fracture section producing tearing-open and pulling-out effects, which cooperatively improves the strength and fracture toughness of the multiphase ceramics.

结果表明：喷雾造粒后，复合粉体的流动特性显著提高，粒度级配合理；随着压强增加，坯体密度在40~80、80~160和160~220 MPa范围内呈现阶梯式增长，160 MPa以上成形后素坯均匀致密，无硬球颗粒存在；无压烧结SiC-AlN复相陶瓷具有优越的烧结性能和力学性能，这是由于AlN对SiC晶粒形成生长势垒，并反应生成2H型固溶体，从而细化晶粒，导致裂纹扩展产生了绕道与偏转效应，呈现晶粒撕裂与拨出现象，协同改善了复相陶瓷的强度及断裂韧性。

The distribution of the grain edge lengths maintains self-similarity in the period of quasi-stationary grain growth.

不同时刻的晶粒长大仿真数据表明，在准稳态晶粒长大阶段晶粒棱长的分布具有自相似性。

The corresponding grain size distribution curve is very similar with those of available theoretical quasi-stationary grain size distributions in literature.

将该函数与Liu等提出的2种三维准稳态晶粒尺寸分布函数进行的对比表明：此3种函数的解析表达形式有所不同，但其曲线图在一定条件下相互吻合。

Based on a new three-dimensional topology-related grain growth rate equation proposed recently by MacPherson and Srolovitz, a set of analytical quasi-stationary grain size distributions were obtained.

以MacPherson-Srolovitz提出的三维个体晶粒长大拓扑依赖速率方程以及三维晶粒组织的晶粒尺寸--晶粒面数间的抛物线型统计关系为基础，导出了相应的描述三维准稳态晶粒尺寸分布的函数族。

The Midwest sees rain Tuesday and Wednesday, then heat into the weekend over the Western Grain Belt with more rain in the Eastern Grain Belt Saturday and Sunday.

中西部谷物带周二和周三将有降雨，直到周末西部谷物带地区都将比较炎热，与此同时东部谷物带周六和周日将有更多的降雨。

Due to rich grain, cotton, oil, fruit, vegetables, meat, eggs, milk known Shanxi, Shanxi Province, are the commodity grain base counties, agricultural high-tech Industries Demonstration Zone, the country's pigs base, is the eight most plant quality wine grapes suitable for one of the regions.

因盛产粮、棉、油、果、菜、肉、蛋、奶而著称三晋，是山西省的商品粮基地县，农业高新技术产业示范区，全国的瘦肉型猪基地，是全国八个最适宜种植优质酿酒葡萄的区域之一。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。