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较大的数

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The heterosis of spike number per plant and grain number of main spike were stable in the intervarietal crosses between years, and so were the grain number of main spike in the crosses of common wheat with club wheat, and were the 1000-grain weight in the crosses of common wheat with spelt wheat.

普通小麦品种间杂种每株穗数优势和主穗粒数优势年度间表现稳定;普通小麦与密穗小麦的种间杂种主穗粒数优势以及普通小麦与斯卑尔脱小麦的种间杂种千粒重优势两年均表现出明显的杂种优势,且幅度相近,其他性状年度间差异较大。

ReduceMain fractionation tower,s press drop can enhance inlet pressure of compressor.At the condition of compress ratio is invariable,it can improve system pressure、increase NTS of stabilization tower、reduce stabilize gasoline C4 ratio、improve system absorbent ability.Generic design can hardly reach the best NTS of absorber,so adding absorber,NTS can obviously increase effect so absorb. Because adding absorber'NTS can reduce system dependence on other factors,and it can not lead to the increase of the energy,so it is the best economic method of improving absorb operation effect. For desorber,double feed stream is a economical means but it need adding the NTS.

降低主分馏塔的压降,可以提高压缩机的入口压力,在压缩比不变的情况下提高系统压力;增加稳定塔理论板数,可以降低稳定汽油中C4的含量,系统的吸收效果改善;一般的设计和吸收塔的最佳板数相距较大,所以改造吸收塔的理论板数,它对提高吸收效果往往最显著,又因为改善吸收塔的理论板数会降低系统对其它因素的依赖程度,而且改善它并不增加能耗,所以改造它对提高吸收效果又是最经济的手段之一;对于解吸塔来说,双股进料的工艺很有经济效益,但它需要增加理论板数来实现。

Some conclusions are inducted through the study: first, grid nudging with the rountine observed data in the MM5 simulation of atmospheric duct affects less over the sea than the land;Second,how much of sigma levels have great influence on simulation of atmospheric duct and the MM5 simulation with more sigma levels depicting the atmospheric ducts are reasonable; Last, multiple nests are allowed on a given level of nesting domain in the MM5 model.

通过研究得到了以下结论:(1)利用常规资料进行格点同化对海上大气波导影响较小,对陆地影响较大;(2)垂直分层对大气波导特征参数影响明显,层数较多描述大气波导比较合适;(3)对于海上大气波导,细网格刻画大气波导特征参数比较细致,但粗网格的模拟已经足够进行大气波导分析。

Dynamic programming algorithm was introduced to solve the problem. Based on discussion of calculation complexity and effectiveness, the exact DP Algorithm was successfully used in operative schedule of the collecting bucket in multi-car-single-layer mode, which has few service nodes. For problems with large number of service nodes, restricted DP algorithm was constructed to avoid rapid expand in calculation and memory demands during programming process. The restricted DP algorithm, successfully used in single-car-multilayer and compound service modes, gets balance between near optimal programming results and reasonable programming time, so as to meet the real time schedule demands.

文中首先在TSP-STW问题的动态规划模型基础上,论述了计算机精确动态规划解法的求解策略和方法以及算法的有效性和复杂性,并将其成功应用于服务节点数相对较少的多小车单层配药服务模式中集中料斗的集药动作规划;在进行服务节点数较多的单小车多层服务模式中取药小车的运动规划时,为限制计算量和存储空间需求的迅速膨胀,引入以合理限制动态规划算法在每一阶段保留的最大状态元素数为核心的有限动态规划法,以便在求解结果的优化程度和规划时间上取得均衡,达到实时调度的要求。

The comparison on different planting densities of hybrid maize Qianxing 201 showed that in 6 density treatments,the yield of the treatments with planting density of 67 500 plants/hm^2 occupied the 1st position,with the best character performance,trimly plants and stronger disease-resistance in the growing stage.

杂交玉米黔兴201不同种植密度比较试验结果表明:6个密度处理中,种植密度为6.75万株/hm2的产量居第1位,各种性状表现较好,生长期间植株整齐一致,抗病性较强;密度为7.50万和6.00万株/hm2的产量分别居第2位和第3位,综合性状表现好;密度为4.50万和5.25万株/hm^2,虽然穗粒数和千粒重较大,但产量不高;密度为8.25万株/hm^2,有轻微倒伏现象,造成部分果穗腐烂。

The results are as follws: 1 This study randomly selected typical and wild populations of Alpinia oxyphylla Miq measured and compared their number of stem per cluster, plant height, number of fruit ear per cluster, single panicle weight, fruit yield per cluster, 100-seed weight and fruit yield.

结果显示,不同居群间的形态特征有显著差异,其中株高,单穗重和果实百粒重的变异系数较小;单丛茎杆数,单丛果穗数,单丛果实产量的变异系数较大。

Soil pH effect largerly for the number of groups of soil and the dividual number of soil animals,but the quantity of water effect lowerly in soil.

土壤pH值与土壤动物的类群数和个体数的相关程度较大,而土壤含水量与土壤动物的相关程度较低。

But the algorithm involves big matrix computation except the scaling coefficient vector and the wavelet coefficient vector at the coarsest scale.

不足之处是较大尺度的小波系数较长,存在较高维数的向量和矩阵运算,计算量大。

The pumps with different structural parameters are simulated numerically using k-ε model and wall functions. The results showed that the number of nozzles, the nozzle angle and the nozzle-to-throat clearance have a great influence on the performance of jet pump, and the turbulent kinetic energy is greater in suction chamber and in inlet of throat.

采用k-ε湍流模型和壁面函数法对不同参数下的多喷嘴射流泵进行了数值模拟,模拟结果表明,喷嘴数和喷嘴角度及喉嘴距对射流泵工作性能影响较大;在吸入室及喉管入口处湍动能较大。

When the fractal dimensions are different, the oxygen contents of the surfaces after the dropwise condensations are different. And the fractal dimension of the magnesium surface becomes larger.

结果表明冷凝试件的表面形貌特征对初始滴状冷凝有较大影响,其分形维数不同,冷凝后镁表面氧含量也不同,冷凝后镁表面形貌的分形维数变大。

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Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势,并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。

This dramatic range, steeper than the Himalayas, is the upturned rim of the eastern edge of Tibet, a plateau that has risen to 5 km in response to the slow but un stoppable collision of India with Asia that began about 55 million years ago and which continues unabated today.

这一引人注目的地域范围,比喜马拉雅山更加陡峭,是处于西藏东部边缘的朝上翻的边框地带。响应启始于约5500万年前的、缓慢的但却不可阻挡的印度与亚洲地壳板块碰撞,高原已上升至五千米,这种碰撞持续至今,毫无衰退。