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The average heterosis of spike number per plant and 1 000-grain-weight were high and obviously related to yield heterosis at 0. 01 and 0. 05 level, respectively; the average yield heterosis of F1 hybrids between common wheat and club wheat was 77. 19%(ranged from-2. 18% to 143. 42%), the average heterosis of spike number per plant and spike grain number were high and both was also obviously related to yield heterosis at 0. 01 level.

结果发现:小麦种间杂种在产量上具有明显的杂种优势,其中斯卑尔脱小麦与普通小麦所配的30个种间杂交组合产量杂种优势平均为109.24%(43.14%~187.96%),单株穗及千粒重平均优势较大且与产量优势的相关分别达极显著水平和显著水平;密穗小麦与普通小麦所配的30个种间杂种的杂种优势为77.19%(-2.18%~143.42%),单株穗和主穗粒优势较大且与产量优势的相关均达极显著水平。

The SCA effect was important in the heterosis of the spike number per plant of the intervarietal hybrid, the SCA and GCA were both important in the heterosis of the grain number of main spike of the intervarietal hybrid; the SCA effect played an major role in the heterosis of the spike number per plant of the interspecific crosses of the common wheat and club wheat, the SCA effect played an major role in the heterosis of the 1000-grain weight of the interspecific crosses of the common wheat and spelt wheat.

普通小麦品种间杂种每株穗杂种优势中,特殊配合力所代表的非加性遗传效应起了主要作用,而主穗粒杂种优势中一般配合力、特殊配合力所代表的加性、非加性遗传效应所起的作用相当;普通小麦与密穗小麦种间杂种主穗粒杂种优势中特殊配合力所代表的非加性遗传效应起了主要作用;普通小麦与斯卑尔脱小麦间杂种千粒重杂种优势中特殊配合力所代表的非加性遗传效应起了主要作用。

The results indicate that as the value of fractal dimension is increased, the interfacial static friction coefficient first increases and then decreases; the interfacial static friction coefficient decreases as the fractal roughness parameter increases; while the inter-facial static friction coefficient increases as the material property or total normal load increases; the curve of static friction coefficient versus dimensionless total normal load is convex when the fractal dimension becomes smaller or fractal roughness parameter is larger or material property becomes smaller.

研究结果表明:界面的静摩擦因首先随分形维的增加而增加,然后随分形维的增加而减小;界面的静摩擦因随分形粗糙度参的增加而减小,但随材料特性的增加而增加,也随总法向载荷的增加而增加;当分形维较小或分形粗糙度参较大或材料特性较小时,静摩擦因-量纲一的总法向载荷曲线为凸弧。

Hydrogen always has valence 1, so other elements' valences equal the number of hydrogen atoms they combine with.

元素的特征价是以该元素一个原子可结合的氢原子或可从一化合物中置换出的氢原子来表示。

The hooter sees the other side is a batman really, ate commiserative heart, say:"That such, you can come, but cannot give you for a long time, after you come up, several count arrive 5 have to go person, understood?"

妓女见对方确实是一名小兵,便动了怜悯之心,说:"那这样吧,你可以来一次,但是不能给你很长时间,你上来之后到五就得走人,明白了吗?"

The variation in surface elements of fog has high complementariness with that of sensing images.

在卫星遥感图像上,雾与积云的纹理结构特征差别非常明显,与层云也有着一定的差别,其关系为:雾的分形维≤层状云的分形维<非层状云的分形维

0Mg/L 6-benzylaminopurine was the optimal concentration of shoots quantity inducing which frequency of inducing shoots and number of shoots per explant were 100% and 11.1 respectively. 0.5mg/L 6-benzylaminopurine was the optimal concentration of shoots length inducing which average length of shoots was 12.0mm. Explant size had significantly effects on direct shoots quantity and length induction. When complete cotyledon used as explant, frequency of inducing shoots, number of shoots per explant and average length of shoots could approach to 100%, 6.7 and 17.1mm respectively. 2.0mg/L silver nitrate could significantly increase shoot quantity induction, both frequency of inducing shoots and number of shoots per explant could be as high as 97.2% and 4.2 respectively. But silver nitrate also could restrain shoots elongation.

结果表明:不同黄瓜品种直接不定芽量诱导存在显著差异,但长度诱导无显著差异;6-苄氨基嘌呤对直接不定芽量和长度的诱导作用显著,其中4.0mg/L为量诱导适宜浓度,其出芽率和每外植体出芽达到最高,分别为100.0%和11.1,0.5mg/L为长度诱导适宜浓度,其平均芽长12.0mm;外植体的大小对直接不定芽量和长度均具显著影响,随着子叶的增大诱导直接不定芽的量和长度增加,其中单片完整子叶为最适宜大小,其出芽率、每外植体出芽和平均芽长分别达到100%、6.7和17.1mm;硝酸银也对直接不定芽量诱导影响显著,其中2.0mg/L为适宜浓度,出芽率和每外植体出芽分别达到97.2%和4.2,但对芽长有抑制作用。

Chapter 4 establishes the theory of convex fuzzy mappings: The concepts, such as Jensen's inequality, positively homogeneous, infimal convolution, right scalar multiplication and convex hull are introduced. The corresponding theorems are demonstrated by using the parametric representations of fuzzy numbers. In anti-fuzzy number space, the conjugate mapping of convex fuzzy mapping is concerned, and convexities of conjugate set and conjugate mapping of convex fuzzy mapping are proved. The notions of subgradient, subdifferential, differential with respect to convex fuzzy mappings are investigated, which provides the basis of the theory of fuzzy extremum problems.

在第4章中,建立了有关凸模糊映射的理论:建立了关于凸模糊映射的Jensen不等式、模糊正齐次映射、凸模糊映射的下卷积、右乘和凸包等概念,利用模糊的参化表示,给出了相应的定理;在反模糊空间,对凸模糊映射的共轭也作了探讨,证明了凸模糊映射的共轭集合和共轭映射都是凸的;最后对凸模糊映射的次梯度、次微分和微分等概念进行了研究,为模糊极值理论打下了基础。

For gas flow past cylinder, the characters of flow field in different Mach number and Knudsen number condition were investigated, and especially for low Knudsen number cases, the results were compared with calculating results of Euler's equation. It showed that they are correspondent by comparing the characters of bow shock and wake. The convergence rates of different high resolution and implicit schemes were also investigated. The convergence behavior of the implicit WENO scheme developed in this paper is better than others. For gas flow past NACA 0012 airfoil, the calculating results were compared with results of experiment. It showed that the results of WENO scheme are of higher accuracy for the case with angle of attack.

在圆柱流场时,我们探讨不同马赫且不同纽森时的流场特性,并在低纽森时,与那维尔-史托克方程式的计算结果比较,我们比较了弓形震波及尾流附近的特性,其结果是相当符合的,同时我们也比较不同高解析隐式算则的收敛历程,从收敛历程图可得到,本文发展出来的隐式WENO算则有较佳的收敛效果;在NACA 0012翼形的流场中,我们将与实验结果做比较,发现利用WENO算则计算的结果,对於具有攻角的流场,亦有相当高的准确度。

First, the partial derivative is defined, based on the convergence in probability measure in the probability measure space.

本文首先在概率测度空间上,利用依概率测度收敛,定义了多随机变量函的偏导,并且偏导的计算式可以通过替换实值函的对应的偏导中所有的实变量替换为随机变量得到。

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Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。

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