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Inheritance of wood traits varies to a certain degree in tree stemfrom pith to near bark owing to the difference of cambium maturity.

由于树木形成层的成熟程度的差异，材性指标的遗传力在树干水平方向上随树龄有一定程度的变异。

Methods］When scoliosis of patients were corrected to a certain degree after three weeks of halo pelvic distraction, the most serious collapsed ribs of concave side of the curve underwent a transverse incision the cross ribs.

［目的］介绍35例重度脊柱侧弯合并严重胸廓塌陷的病例，在颅盆牵引的过程中，同时采用肋骨成形术加水平牵引治疗胸廓塌陷。

The message to a certain degree of stability in the stock market should play a military role should be seen as a welcome positive.

到一个稳定的股市一定程度的信息应当发挥军事作用应该是一个值得欢迎的利好消息。

However, up to the ideal point, so that we can all skills to a certain degree of threat to others.

不过能点上去是最理想的，这样我们所有技能都能对别人造成一定的威胁。

In the ***, all types and fundamental principles of Radon transform are summarized systematacially. This *** starts from the general linear Radon transform, and then researches how to use the damped least square method to find the solution of the forward transform. However, the least squares smoothing effect will lead to a certain degree of trails in the data of Radon domain, which led to the application\'s limitations. After that the implementation in Radon domain and relative merits of linear Radon transform, parabolic Radon transform and polynomial Radon transform which have time invariance are introduced, the conjugate gradient method that can solve numerical solution is also given. And then the high resolution Randon transform is discussed, it introduces the regularization theory and Bayes principle into inversion, which successfully remove the negative affect caused by discrete Radon transform. Finally, we introduce the optimal weighting similar coefficient Radon transform, which adapt to the time variant quality of hyperbolic Radon transform.

本文系统总结了Radon变换的各种类型及其基本原理，从τ- p变换(即一般线性Radon变换)出发，研究利用阻尼最小二乘平方法求解其正变换，但是最小平方法的平滑作用会导致Radon域数据存在一定程度的拖尾效应，给这种方法的应用带来了很大的局限性；然后先容了具有时不变性的线性、抛物和多项式Radon变换在频率域的实现及其优缺点，给出了求解其数值解的共轭梯度算法；接着讨论了高分辨率Radon变换，它把正则化思想和贝叶斯原理引进到了反演中，很好的克服了离散Radon变换产生的截断效应对结果的不利影响；最后先容了适应双曲Radon变换时变性质的高分辨率最优相似系数加权Radon变换。

In this paper, a modified polynomial method is presented, which can solve this difficult problem to a certain degree.

本文中提出的改进的符号多项式模型方法能在一定程度上解决这一难题。

Urban agglomeration is a unique organizational form of geographical space in the process of urban regionalization and region urbanization as well as a sign and product of urbanization to a certain degree.

城市群是城市区域化和区域城市化过程中出现的一种独特的地域空间组织形式，是城市化发展到一定水平的标志和产物。

It is found that: the standard Model can be used to predict flows at the station and resultant velocity and temperature field under some reasonable presumptions; the impact brought by stopcock wind is variable according to the different tunnel structures; the temperature of is related with the distribution of heat load; the VAV system has advantage in energy saving, but when the air volume reduced to a certain degree, we should consider the alteration of rising the temperature of supply air, and increasing the quantity of it.

研究表明：采用合理的假设，标准的湍流模型能够较为准确地模拟和预测地铁站台的温度场与速度场；活塞风对站台的影响随区间形式的不同而不同；空调送风温度的设定与负荷的分布情况有密切的关系；针对站台空调季全天的负荷变化，VAV环控方案可以达到节能的目的，但在风量过小时，适当考虑采用提高送风温度，加大送风量的方法进行局部的调整。

Self-searching can be always found in Eugene O"Neill"s plays. Based on such a theme, The Great God Brown impresses readers and audience to a certain degree.

寻找真正的自己一贯是尤金·奥尼尔剧作中不可缺少的一个主题，《大神布朗》也正是基于这样一个主题，同时运用表现主义手法将故事折射入观众的内心。

It is definitely a good energizing tonic and will help your health to a certain degree.

它无疑是一个好激补品，并会帮助你的健康做出了一定贡献。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。