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Aiming at the mathematic model of shafting crankle coupling vibration based on the subsection continuous mass model,the multidimensional frequeney analysis method is put forward and developed.Combining frequency change with shafting configuration parameter,it's more favorable to have direct analysis.The method...

针对基于分段连续质量模型的轴系弯扭耦合振动数学模型，进一步简化并提出多维频率分析方法，将频率变化与轴系的结构参数联系起来，有利于直观分析，同时给出分析振型、共振频率及共振模态等的方法

The structure parameter influences on lateral stability, such as crankle rigidity ratio of arch rib, arch axis coefficient, arch high span ratio, lateral rigidity of bridge decking and arch rib ratio, the effect of non-orientedly conservative loadings of bridge deck, lateral wind loadings were discussed. Corresponding numerical charts were given, and they may be of some reference value and helpful to the parameter design of ribbed arches.2. In this paper, the example bridge is a long-span half-through CFST arch bridge of a 100m span in Yi Lan.

分析了拱肋的抗扭刚度与横向抗弯刚度比、拱轴系数、矢跨比、桥面系的横向抗弯刚度与拱肋的横向抗弯刚度比、桥面系横向刚度引起的非保向力效应、横向风荷载对单肋拱横向稳定的影响，并给出了相应的图表，为拱桥设计时拱肋的结构参数的选取提供一定的依据。

The structure parameter influences on lateral stability, such as crankle rigidity ratio of arch rib, arch axis coefficient, arch high span ratio, lateral rigidity of bridge decking and arch rib ratio, the effect of non-orientedly conservative loadings of bridge deck, lateral wind loadings were discussed.

分析了拱肋的抗扭刚度与横向抗弯刚度比、拱轴系数、矢跨比、桥面系的横向抗弯刚度与拱肋的横向抗弯刚度比、桥面系横向刚度引起的非保向力效应、横向风荷载对单肋拱横向稳定的影响，并给出了相应的图表，为拱桥设计时拱肋的结构参数的选取提供一定的依据。

Four cultivars (British Queen, Earl's Favourite, Crenshaw, Pakistan 981) and 3 lines of Earl's Favourite (Spring 3, Iwata 2, Summer 7 2) could be distinguished from each other by using six primers.

结果表明，可用其中 6种引物将 4个品种( British Queen、Earl's Favourite、Crenshaw、Pakistan- 981)及Earl's Favourite的 3个品系(春系 3号、磐田 2号、夏系 7- 2 )加以鉴别。

Its contents are as follow: A description for the characteristics of Agropyron elongatum and its genome; the methods used to overcome the cross-sterility and hybrid sterility; the cross breeding procedure and the genetic analysis for it; the selected hybrids which are the Triticum-Agropyron octoploid species, the alien addition lines, the alien substitution lin...

内容介绍了长穗偃麦草的特性和染色体组型，克服杂交不育和杂种不育的方法，杂交育种的程序及其遗传分析和选出的小偃麦八倍体种、异附加系、异代换系与丰产抗病的小偃麦新品种。

In order to understand the effect of Ogura sterile cytoplasm on interspecific crossability between Brassica napus and Raphanus sativus, three radish cytoplasmic male sterilie lines of B. napus and their corresponding maintenance lines were used as female parents to hybridize with R.

用三个甘蓝型油菜萝卜细胞质雄性不育系及其相应的保持系作母本与萝卜杂交，以了解Ogura不育胞质对甘蓝型油菜与萝卜种间可交配性的影响。

The phenomenon of saturation or "lock up" when all of the grains have transformed,is described in a rattier simple form through domain volume fractions by the proposed model, in which domain switching in ferro-electrics is analogous to that of dislocation movement on crystal slip planes in metals.

依据晶体塑性理论，将铁电材料中的电畴翻转类比于晶体位错滑移面上的滑移系，定义铁电材料中相应的电畴反转系；采用电畴的体积分数表述电畴翻转的变化量，得到了电畴翻转的饱和特性的简单描述。

13 K,α-pinene+ p -cymene (429. 05—447. 15 K),β-pinene+ p -cymene (439. 20—448. 66 K) and α-pinene+β-pinene+ p -cymene (432. 17—448. 11 K) were determined at atmospheric pressure (100. 7 kPa) with the modified Ellis still. The thermodynamic consistency of the experimental data was confirmed by means of the Herington method.

采用改进的Ellis平衡釜测定了在常压(100.7 kPa)下三个二元物系α-蒎烯＋β-蒎烯(428.82 K ~ 438.13 K)，α-蒎烯＋对伞花烃(429.05 K ~ 447.15 K)，β-蒎烯＋对伞花烃(439.20 K ~ 448.66 K)和一个三元物系α-蒎烯＋β-蒎烯＋对伞花烃(432.17 K ~ 448.11 K)的汽液相平衡数据，并利用Herington规则，以积分检验法对实验数据进行了热力学一致性检验。

Whitin Leuciscine, East Asian endemic Cyprinid taxa were recognized as a monophyly.

在雅罗鱼支系中，东亚特有鲤科鱼类的单系性得到重现，并且支持鲌类物种的单系性。

Methods Study subjects are all Chinese including 16 infants with sporadic congenital deaf-mutism, 39 patients with autosomal recessive hereditary hearing loss, 30 patients with autosomal dominant hereditary hearing loss and 100 normal adults.

收集中国散发先天性聋哑儿童16例，常染色体隐性遗传性聋39例(39个家系)，10岁前开始听力下降的常染色体显性遗传性聋30例(30个家系)和健康对照组100例。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。