小粒

Results show that the nanometer particles are in spherical shape, the size of particles is homogenized and controllable, no agglomeration. The particle size changes with the processing condition; the maximum particle size is in the range of 80~90 nm, and the minimum particle size is in the range of 25~30 nm. The ice performance test in indoor cloud chamber shows that the nanometer silver iodide particles as catalyst for artificial weather modification have great application prospect.

结果表明：纳米碘化银粒子成球形，粒径均匀可控，无明显团聚现象，不同工艺条件下获得的碘化银粒径不同，最大粒径范围在80~90 nm，最小粒径范围在25~30 nm，因为碘化银具有类冰结构，是最佳成冰物质，故纳米碘化银粒子作为人工影响天气催化剂具有极大的应用前景。

OF super grade, Grade I and II is exported. Fine talcum powder is of high whiteness in very fine granula tion which feels soft and slippery, so it is used in hitech fields, such as paint and coating industry, it is also used in paper making industry. Besides calcine talcum powder from 200 mesh to 1250 mesh is used in china and pottery industry. The following kinds such as Qixia3-grade blocks, 3-grade grains, 4 grade block and 4-grade grains are used as raw materials of china and pottery products. When 15% 80% of talcum powder is added in porcelain ,the Final china products is of very heat expansion, but of high strength, transparency and brilliance in colure and of very high percentage silicon , alg but of very low percentage of iron and aluminium.

特、一、二级产品90%以上出口；超微细滑石粉具有较高的白度、极细的微粒，柔软而有滑腻感，主要应用于高新技术领域，在油漆、涂料工业中用作体质填充料，在造纸工业中，用于涂层和涂料，可以改善纸张光泽和着墨性等；200目—1250目煅烧滑石粉主要应用于陶瓷釉面等；栖霞三级块、三级小粒、四级块、四级小粒是陶瓷生产的主要原料，在瓷土中掺入15%—80%的滑石粉，制成的各种瓷器，具有极少的热膨胀和温膨胀性，有强度高、不龟裂、增强韧性及透明度高、色彩明亮美丽等特点，并且以特别高的硅、镁和特别低的铁、铝含量而闻名陶瓷行业。

In this research, the ~ and F2 of the crosses between a natural mutant 慪34?with super-minute grain and 慪38?with super-large grain,慡huhui 881擲huhui 527?with middle grain size were carried out to study the inheritance of the grain shape (grain length, grain width, grain thickness and grain length/width ratio) and 1000-grain weight. The main results are summarized as below:? The F1 grain length, grain width, grain thickness and 1000-grain weight of three crosses were lay between the two parents and tended to Y34, which indicated that those grain traits were all governed by the dominant effect of Y34 and influenced by both female and male parents. The differences of F1 grain length, grain width, grain thickness and 1000-grain weight of positive and negative crosses between Y38 and Y34 indicated the existence of cytogene effects.? The broad heritabilities of major grain traits were calculated.

本研究利用一份水稻极小粒自然突变材料Y34与一份水稻极大粒材料Y38、两份常规籽粒大小材料蜀恢881、蜀恢527的杂交F_1及F_2，对主要粒形性状（粒长、粒宽、粒厚、长宽比）及千粒重进行了遗传研究，根据遗传研究的结果利用微卫星标记结合F_2群分法对控制Y34短粒性状基因进行了分子标记定位，主要结果如下：●各组合F_1粒长、粒宽、粒厚和千粒重介于双亲之间且明显偏向于小值亲本 Y34，这表明粒长、粒宽、粒厚和千粒重均主要受小值亲本显性基因的控制并同时也受大值亲本核基因的影响。Y34与Y38正反交F_1在粒长、粒宽、粒厚、千粒重等性状上存在差异，表明存在细胞质效应。

The main research work of this paper are focused on following areas:(1) Based on review of the theory and methods on measurements of particle fields, a new idea for obtaining particle size and velocity distribution within a spray through imaging the particle field with a laser light sheet was put forward;(2) A DPIV (Digital Particle Image Velocimetry) system, is fit for velocity measurements of low speed flows, was developed and expended to particle size distribution measurement;(3) An arithmetic for particle velocity field reconstruction was developed, and the velocity distribution of water mist was also obtained;(4) A software system for particle analysis, which based on image geometry emend, de-noise and image partition was developed, the parameters such as particle size distribution, mean diameter, number of particles, minimum and maximum diameter can be got with this system;(5) A water mist system was developed and its characteristics, such as droplet velocity, size distribution, number of droplets and spray cone angle under different conditions were obtained from experiments with PIVS;(6) The measurement results of water mist characteristics with PIVS were compared and analyzed with the simply simulated results, and in addition, in order to verify the accuracy of PIVS, some experiments were conducted with the standard particles, such as glass-ball with known mean diameter of 50μm and 115μm, metallic coated tracing particle with mean diameter of 12μm;(7) Some experimental studies on interaction of water mist with liquid pool fires were conducted.

本论文的主要工作包括以下几个方面：（1）在对粒子场测量的相关理论和具体方法进行综述分析的基础上，提出了通过采用激光片光对粒子场进行成像以获取其粒径和速度等参数分布的新思路；（2）研制了适宜于低速流动速度场测量的DPIV(Digital Particle Image Velocimetry)系统，并使其实现了对粒子场粒径分布的测量功能；（3）研制了基于粒子运动轨迹的速度场重建算法，获取了细水雾雾场的速度分布；（4）研制了基于几何校正、去噪、图象分割等图象处理方法的"粒度分析软件系统"，该系统既可分析给出粒子场的粒径分布直方图和平均粒径，还可给出粒子的数目以及最大、最小粒径等信息；（5）建立了一细水雾发生系统，并应用上述方法对不同压力条件下细水雾系统的雾场特性（如速度分布、雾滴粒径分布、雾滴的数目、喷雾张角以及雾化长度等）进行了实验测量研究；（6）对细水雾特性参数的PIVS测量结果与计算机简单模拟计算结果进行了定性比较分析，并利用平均粒径为50μm和115μm的玻璃球以及12μm的标准示踪粒子对PIVS系统的粒径和速度测量结果进行了实验验证，同时对其局限性进行了分析讨论；（7）对不同工况条件下细水雾与油池火相互作用的过程进行了模拟实验研究。

Brown rhizomorph and hyphae can be seen on the seedlings'rhizome, main root and side root while nothing is on the tip of the root.It was found that rhizomorph on the surface of roots would die after inoculation in 90 days in pot.

子实体单生或丛生，出菇至成熟3 d~4 d，单个子实体重20.0 g~62.0 g；小粒咖啡苗的根茎、主根及侧根被茶褐色的菌索和菌膜包裹，而根尖及靠近根尖的侧根上没有菌丝和菌索生长或生长很少；盆栽小粒咖啡苗，在接种90 d后其根系表面的菌索死亡。

It shows that the all physical mechanical index of small size spall satisfy the design demand except the grain composition.

通过对小粒径石料室内及现场试验研究，小粒径石料填筑混凝土面板坝堆石体的应力应变分析以及大坝变形观测分析，认为，小粒径石料的物理力学性能指标除了级配不满足设计规范外，其他指标均满足设计要求。

Coffee belongs to Rubiaceae Family, an evergreen shrub or short sarbor, and it has many species, among which the widely planted ones are :Arabica, Robusto, and Ethiopean ,while one of the arabica species named"Aromatic Coffee" is mostly prolific, accounting for about 80 percent of the total output of coffee.

咖啡是茜草科咖啡属的多年生常绿灌木或小乔木，种类很多，被广泛种植的有小粒种、中料种、大粒种和埃塞尔萨种，其中被称&香咖啡&的小粒咖啡种产量最多，约占咖啡总产量的百分之八十以上。

From packaging business card printing and membership card making ink dispersion system, small particle size of pigment particles adsorption of resin and solvent relatively significant pigment particles is more than likely, it is often represented as density gets smaller, large-size variable density of pigment particles will cause the pigment particles; and handlethe under-metaphysical upfloat fluoroaracil colors of and form the business card printing and membership card making ink and floating.

从敌国包装制卡和会员卡制息油不朱凑拢编制看，小粒径的颜料粒子吸附的树脂和溶剂相不不不不不差给比不小的颜料粒子不小得众，不常表示为密度变小，不小粒径的颜料粒子密度变不小便会酿成颜料粒子的下沉；而下粒径的颜料上浮而构成了制卡和会员卡制息油不朱的浮色本体。

With increasing the concentration of the mixture of antimony oxide from 10 % to 20 %, the reaction time decreases from 90 min to about 30 min, but the optimized range of molar ratio of H3PO4 to antimony increases. The reaction temperature is not the main factor on particle size with the existence of H3PO4, the average particle size is c.a. 160nm without obviously variety in the temperature range from 60 °C to 90°C.

氧化锑混合物浓度从10%增加到20%时，反应达到平衡的时间从90min下降到30min左右，形成小粒径胶粒所需磷酸与锑摩尔比的最佳范围也随之上升；在稳定剂磷酸存在的条件下，温度不再是对胶体粒子粒径的主要影响因素，在60～90℃之间，形成的胶体五氧化二锑的粒径无明显变化，在160nm左右。

As a key regulator of grain number, the DEP1 locus (and perhaps also its homologs in other small-grain cereals) may provide a means of manipulating grain yield in these crucial crops.

作为谷粒数量的一个主要调节者， DEP1位点（也可能其他的小粒谷粒作物中与 DEP1相当或相同的结构）可能提供了一个调控主要农作物中谷粒生产量的方法。

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。