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In-tree variation of longitudinal mechanical properties of tracheids: 7 A general increase trend from pith to bark is found for either longitudinal MOE or tensile strength of tracheids of Chinese-fir from plantation.

5尽管从总体上木材的纵向弹性模量与气干密度之间存在较强的相关性，但它们之间的变化趋势经常不同步，特别是幼龄早材弹性模量与密度之间的相关性要低于成熟早材。

Results The fibular proper plantar arteries and nerves longitudinal and transversal sectional average diameters were longer then 0.43mm and 0.65mm respectively. Those of the tibial proper plantar arteries and nerves longitudinal and transversal sectional average diameters were 0.55mm and 0.58mm respectively.

结果 趾跖腓侧固有动脉和神经纵径和横径的平均值分别大于0.43 mm和0.65 mm，趾跖胫侧固有动脉和神经纵径和横径的平均值分别为0.55 mm和0.58 mm。

The theoretical and experimental research on the elasto-plastic buckling strength of the web with longitudinal stiffener in I-section steel girder under pure bending was made using energy method and the influence of stiffness of longitudinal stiffener on buckling coefficient of the girder web was analyzed.

对工字钢梁腹板在纯弯作用下的弹塑性屈曲承载能力进行了理论计算和试验研究，并进行了对比分析，着重研究了纵向加劲肋刚度对腹板屈曲系数的影响－对现行《钢结构设计规范》（GBJ17－ 88）的有关条款进行了讨论

The main way of the method of beam grid is to simulate the top structure with a equivalent beam grid, and concentrates the scattered bending rigid and tension rigid in slab or box beam into the close equivalent beam grid, and the longitudinal rigid of the real structure is concentrated in longitudinal beam rigid, and the lateral rigid is concentrated in lateral beam rigid.

梁格法的主要思路是将上部结构用一个等效梁格来模拟，将分散在板式或箱梁每一区段内的弯曲刚度和抗扭刚度集中于最邻近的等效梁格内，实际结构的纵向刚度集中于纵向梁格构件内，而横向刚度则集中于横向梁格构件内。

A large handle size gives more area to apply friction and a wider radius to apply the frictional force in order to resist racquet twisting about its longitudinal axis (Torsion, or Longitudinal Torque) on off-center hits.

大的手柄尺寸可以提供更大的面积来增加磨擦力，更宽的半径能产生磨擦力来阻止没有击中中心时球拍绕长轴的翻转。

The main products include: rotary blade, four-line blades, printing slotting machine blades, all types of sub-machine blade, longitudinal±and the production line of longitudinal section of a thin blade, grinding wheel, alloy knives.

主要产品有：轮转机刀片、四联机刀片、印刷开槽机刀片、各类分纸机刀片、纵切薄刀及生产线纵切薄刀片、砂轮、合金刀等。

In summary, various key experimental conditions in electron acoustic imaging of ferroelectric domains were systematically studied. The optimum experimental conditions to obtain EAI of domains with good quality and the factors important to image analysis have been presented. The piezoelectric vibrator model and calculation of motion equation are helpful for explaining the imaging mechanism and related experimental phenomena. The sample holder with variable electric field was designed. The domain movement of BaTiO〓 ceramics and crystal under lateral and longitudinal applied electric field and domain movement of PMN-PT crystal under longitudinal poling electric field were observed. The application of SEAM on revealing of ferroelastic domains, imaging of residual stress distribution in ceramics coatings and around the pores on the surface of ferroelectric ceramic composite have been reported respectively. All these works enriched the study of electron acoustic imaging and extended the application of SEAM in the characterization of materials.

综上所述，本文系统地研究了各项关键实验条件对电畴电声成像的影响，指出了获得最佳畴结构电声像的条件和成像分析中应当考虑的各种影响因素；提出了解释电畴电声成像的压电振子模型，在此基础上推导并求解了压电振子运动方程，并对一些实验现象作出了解释；成功地设计了可变电场的样品台，观察了BaTiO〓陶瓷和晶体在横向电场作用下的畴运动，PMN-PT晶体在纵向极化电场作用下的畴运动；探索了电声显微镜在铁弹畴成像，陶瓷涂层应力观察，陶瓷自然表面气孔周围应力成像的应用，这些研究，丰富了电声成像的学术内涵，拓展了电声显微镜的应用领域。

The thesis mainly studies the potential well effect on the bunch longitudinal distribution, on the basis of correlated wake field, coupling impedance and various instabilities. Then the inductance and resistance parts of coupling impedance of the KEK-ATF damping ring are obtained from the analyses of the measured bunch longitudinal distribution.

本论文在充分阐述与束流集体效应相关的尾场、耦合阻抗和各种不稳定性的基础上，着重研究了势阱效应对束团纵向分布的影响，并由实测的KEK-ATF阻尼环的束团纵向分布得到了其耦合阻抗的电感和电阻部分。

The bunch lengthening is mainly due to potential well distortion and longitudinal microwave instability . From the systematical measurement of the bunch longitudinal distribution, the inductance and resistance parts of coupling impedance of the BEPC storage ring are got.

束长拉伸主要是由于势阱畸变和纵向微波不稳定性，本论文从束团纵向分布的测量中，首次得到BEPC储存环耦合阻抗的电感和电阻部分，并用所得到的耦合阻抗模型对束长拉伸进行验证。

The results show that: The mechanical behavior of universal segment lining is different under different assembling modes, which relates to the assembling types, places of transverse and longitudinal joints and position of the seal roof block the objective segment ring; design values of positive and negative moments, shearing force of segment liming and shearing forces of longitudinal bolts of universal segment lining are controlled with staggered joint assembling, and design values of deformation and surrounding rock resistances are controlled with straight joint assembling.

结果表明：通用管片结构在不同拼装方式下的力学行为是不相同的，与拼装类型、分析目标环的环向和纵向接头的位置、封顶块的位置有关；错缝拼装控制通用管片结构正负弯矩、剪力、纵向螺栓剪力设计值；通缝拼装控制变形量和地层抗力设计值。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。