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The invention discloses a multi-cell pilot frequency distribution method applied in an orthogonal frequency-division multiplexing system, which comprises the following steps: generating at least two different original frequency hopping sequences according to a predetermined pilot frequency domain; generating a combined frequency hopping sequence (having length greater than that of the original frequency hopping sequences) from at least two different original frequency hopping sequences; generating different pilot frequency structures satisfying collision threshold requirements based on the combined frequency hopping sequence; and distributing the generated pilot frequency structures to each cell.

本发明公开了一种多小区导频分配的方法，用于正交频分复用系统，按照预定的导频频域间隔生成至少两种不同的原始跳频序列；将至少两种不同的所述原始跳频序列生成组合跳频序列，所述组合跳频序列的长度大于所述原始跳频序列的长度；基于所述组合跳频序列生成满足碰撞门限要求的不同导频结构；将所述生成的导频结构分配给各小区。

The results showed that the soil seed banks appeared significantly different in species number,seed density and life form between the different years,the quadrats under grazing and grazing suspension and the different degeneration gradients.

结果显示，土壤种子库物种数、种子密度和植物生活型在年际间、封育与放牧样地间及退化梯度间均有明显差异。

Regional economic development is driven by the dual mechanisms of polarized and trickling-down effects of growth pole, but in the different economic system and different regions, the effect of growth pole is different.

增长极带动区域经济的发展是通过极化和扩散效应的双重机制来实现的，但是在不同经济体制、不同发展水平的区域中，实施增长极战略的效果是不同的。

The results indicated that soil evaporation around barley root was restrained effectively in sunny day when the positive electric field was applied. If the field voltage and interval time are constant, the electric field intensity will be different under the different pole distances, and the effect of boosting plant growth will be different by restraining evaporation and moisture.

试验结果表明：晴天施加正向空间电场可以有效地抑制大麦根系周围土壤水分的蒸发，当电压及间歇工作时间保持不变时，不同异极距下其电场强度不同，表现出的抑蒸聚水促生效果不同。

Secondly, life expectancy and survival rate of different age stages and different gender of plateau pikas are different.

不同性别、不同年龄段的高原鼠兔生命期望与存活率不同。

Culture medium, water volume, root exudates of different crops, temperature, illumination affecting germination conditions of oospores of Phytophthora sojae studied in this reasch and compared the difference of germination of oospores of different race of Phytophthora sojae, filtrated the higher germination rate of strain and suitbable conditions combination of germination of oospores; The pure-line(Race 1) in virulence was obtained through isolation and culture and virulence identify of the second generation. The pure-line was analyzed by molecule method of ISSR. The results were summarized as follows:There was quite difference of germination rate of oospores on different culture medium.

本文测定了不同培养基、水量、农作物根渗出液、温度、光照对大豆疫霉菌卵孢子萌发影响，比较了大豆疫霉菌株间卵孢子萌发的差异，筛选出萌发率较高的菌株和适于卵孢子萌发的条什组合；通过继代单卵孢株分离培养和毒性鉴定，建立了大豆疫霉菌单卵孢株毒性纯系，并分析了单卵孢株毒性纯系后代群体ISSR分子指纹，结果如下： 1。

The results of ELISA display that the expression ofthe Bt crystal protein is different in different tissues and at different developmental stages.

ELISA检测结果表明，Bt杀虫蛋白在抗虫棉中的表达具有时空特异性。

Methods:collecting different patients who were applied to localanaesthesia and caused complication with different anaesthetic drug andin different parts of body such as cases of extracting tooth,opening chamber of pulp and operationin oral surgeryEach complication will be analysed csrefullyResults:It shows that local anaesthetic drug can cause some symptom asFollowing;Headache,lumbago,some symptom of ophthalm...

通过收集拔牙、开髓、颌面部手术中，因不同的麻药而在人体不同部位引发的并发症加以分析。结果：局麻药在口腔麻醉中可引发头痛、腰痛、视力及听力障碍、全身麻木、肾功能改变等并发症。结论：并发症的发生与医生操作不当以及患者心情紧张及恐惧心理有关。

Specializing in the production of products are: different materials of ceramics, food conveyor network series; building different models, ship industry, sheet metal punching net, steel nets, aluminum net, titanium net, stainless steel plate net, corrugated square hole network active braid, stainless steel wire mesh, road barriers, galvanized barbed wire, hexagonal wire mesh and other products series; different types of metal expansion network series; there are a variety of embossed net, tick net, welded wire mesh and so on.

专业生产产品有：不同材质的陶瓷、食品用输送带网系列；不同型号建筑、船舶业用金属板冲孔网、钢板网、铝板网、钛板网、不锈钢板网、波纹方孔网、活络编织网、不锈钢丝网、公路防护栏、镀锌刺铁网、六角网等产品系列；不同类型的金属扩张网系列；还有各种压花网、勾网、电焊网等。

The effect on the stress intensity factors of different crack position, different wheel load and different pavement structure was also analyzed particularly.

推导了考虑层间界面部分约束的层底裂缝应力强度因子的数值计算方法，并详细分析了不同层间约束条件对路面裂缝应力强度因子的影响。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐