横截面

So it is necessary to calculate the strength and deflection of the tube tower.

管塔杆身横截面分为薄壁圆形和正多边形 2类。

The ratio of the cross-sectional area of the doctor blade (4) to the diameter of the doctor blade rod (3) is less than 60 mm, preferably less than 30 mm.

刮刀床(4)的横截面面积(单位mm 2 )和刮刀棒(3)的直径之比小于60mm，优选小于30mm。

It is not caused by poor skills of the draftsman, but by the idea, that a larger cross-section at the outlet will compensate the lack of height.

这不是穷人造成的技能，制图，但这一想法，认为较大的横截面的出口将弥补缺乏高度。

Secondly, we choose the proportion of shares held by institutions as dependent variable, and we use log of the total asset, volatility, beta, Jensen Index, debt-to-asset ratio, dividend yield, turnover ratio, years listed in exchange and HS300 Index dummy as explanatory variables. Then we set up a multiple regression model. Finally, we use the cross-sectional data from the end of 2006 to the end of 2007Q3 to test the relationship between the explanatory variables and the proportion held by institutions.

具体方法如下：首先，在已有研究成果的基础上，对我国机构投资者的审慎性持股偏好提出了两个假设；其次，以机构持股占个股流通盘的比例为因变量，以公司的总资产对数值、波动率、贝塔值、Jensen指标、资产负债率、股息率、年度换手率、上市年限为解释变量，并在引入沪深300虚拟变量后，建立了多元线性回归模型；最后，采用我国证券市场迎来历史性大牛市、机构投资者发展最为迅猛的2006年末-2007年3季末的四个横截面数据，对各解释变量与机构持股比例之间的关系进行了实证检验。

Research results indicate that casing bend not only makes effective cross section decrease but also leads to casing snapping owing to larger local tensile stress.

结果表明：套管弯曲不仅使有效横截面降低而且由于局部拉应力过大造成套管拉断。

According to the need of fabrics, we could use other styles cross section of felting needles.

根据织物的需要可采用其它款式横截面的刺针。

The diagnostic features include straight and vertical anterior margin of antorbital fenestra, frontal with a vertical lamina anteriorly, surangular T-shaped in cross section, elongate manual phalanx I-1 as long as metacarpal II, and the presence of a prominent lateral cnemial crest that is continuous with the fibular crest.

其主要鉴定特征包括：眶前孔前缘平直、额骨前缘有一垂直板、上隅骨后部横截面 T 形、第一指的第一指节加长和发育的胫骨外侧嵴与腓骨嵴相连。

In other words, energy flux density is thethrough unit cross-section area per unit time.

换言之，能流密度是单位时间内垂直流过单位横截面积的能量

It's M2 factor is approaching the ideal value 1 and the beam intensity profile remains Gauss Profile. Laser beam with good propagation and focus characters. The beam can propagate a long way and can be focused with lens with long focal distance. The focal beam waist radius is 134μm, the focal distanced of the focus lens is 300mm. It's focal depth is about 5mm and the focal shift is about 1mm in the range of processing (3m).

结果表明，Slab CO2激光器具有高光束质量，其M2因子非常接近1的理想值；激光束具有良好的传输和聚焦性能，可以长距离传输；使用焦距为300mm的聚焦镜聚焦，聚焦光斑的束腰半径约为134μm，光束横截面能量分布接近理想的高斯分布，焦深约为5mm，在加工范围内(3m)，激光束的焦点漂移量大约为1mm。

For comparison reason, the planar and spatial models based on a forewing structure were analysed, it is shown that the cambered corrugation in the wings can improve the flexural stiffness of dragonfly wings effectively; the veins distribution and their size variation in different zones are quite reasonable.

对前翅平面模型和立体模型的静力性能进行了对比分析，发现翅膀中的起拱、起皱结构可显著提高蜻蜒翅膀的弯曲刚度；分布在翅膀不同区域的翅脉横截面尺寸与其受力大小是完全相适应的。对翅膀模型分有膜、无膜两种情况进行对比分析，得出翅膜中产生的膜应力刚化效应可有效改善翅膀结构的刚度。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。