纹孔

Studies on the structural types of bordered pits of gymnospermous woods in China.

Title 中国裸子植物木材具缘纹孔构造类型的研究。

In this paper,the condition that gas flow through wood in the pattern of linear flux wasdetermined from the theories of thermodynamics and fluid mechanics.The expression of flow-resistor of tracheids is reduced with the continuity equation and the equation of motion indifferential form.The flow-resistor network is constructed by means of the theory ofpercolation.The equivalent flow-resistor was evaluated by utilizing the real spacerenormalization approach.

本文根据针叶材管胞的解剖结构，运用孔隙介质流体力学的理论，导出了管胞关于气体渗透流阻的数学表达式；继而根据管胞纹孔在三个纹理方向上的连接特性，利用管胞流阻建立了一个描述针叶材三个纹理方向气体渗透性的三维流阻网络；然后运用实空间重整化变换的方法，求解试件流阻网络三个纹理方向的等效流阻，并由此计算试件相应的气体渗透系数；最后用我国南方常见的人工林马尾松木材试件进行渗透系数实际测量，与理论计算结果进行对比分析，以验证三维流阻网络及其理论的准确性。

Axial parenchyma rare, diffuse and scanty paratracheal.

纤维分子径壁和弦壁都具有具缘纹孔。

The antiquity of Schisandraceae is supported by the presence of single vessel, scalariform perforation plates with many bars, scalariform vessel pitting and heterogeneous rays.

在五味子科中发现木材导管单生、具梯状穿孔板、导管壁具梯形排列的纹孔以及木射线异型等原始性状，支持五味子科在被子植物中的原始地位。

The wood anatomy of 21 collections of 7 species within Kadsura Kaempf. ex Juss. and 14 collections of 8 species of Schisandra Michx., representing a large proportion of two genera in Schisandraceae, was investigated using light microscopy and scanning electron microscopy. Several features in the secondary xylem, such as types of vessel elements, arrangement of vessel-ray pitting, types of ray and shape of the body ray cells, show consistent characteristics at the family level, which support the view that Schisandraceae represents a monophyletic group.

在光学显微镜和扫描电镜下观察了南五味子属Kadsura 7种21个样品和五味子属Schisandra 8种14个样品的木材解剖特征，结果表明次生木质部的导管分子类型、导管－射线间纹孔的排列方式、射线类型、射线细胞形状等性状在科的水平上很稳定，这些共同特征都支持五味子科Schisandraceae是比较自然的类群。

Fiber-tracheid An elongated cell with bordered pits found in wood, intermediate in form between a fiber and a tracheid.

纤维管胞：木材中具有具缘纹孔的细长细胞，是纤维和管胞的中间类型。

Tracheids have heavily lignified walls and the only connection between adjacent tracheids is through paired pits, which are mainly concentrated in the end walls.

管胞的细胞壁高度木质化，相邻管胞之间的仅有的连接通过集中位于端壁的成对存在的纹孔。

In this experiment, the optical microscope was used to observe and analyze that nickel-plated veneer and we found Nickel depositing in the cell cavity, ray, pit, tracheae, and fiber of timber.

通过对化学镀镍单板的光学显微镜观察和分析，化学镀镍的单板在木材的细胞腔和细胞壁上的木射线组织、纹孔、管胞、木纤维上都有金属镍的沉积。

A cavity in the wall of a plant cell where there is no secondary wall, as in fibers, tracheids, and vessels.

纹孔一个没有从属内壁的植物细胞壁里的腔，如在纤维、管胞和导管中

Botany A cavity in the wall of a plant cell where there is no secondary wall, as in fibers, tracheids, and vessels.

纹孔：一个没有从属内壁的植物细胞壁里的腔，如在纤维、管胞和导管中

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。