薄壁的

Based on the theory of Vlasov, this paper proposed the method of spline Ritz to analyse the restrained torsion of thin walled bar with open section, combining the traditional Ritz method and spline function method.

同时在符拉索夫理论的基础上，结合传统的里兹法，利用样条函数提出了开口薄壁杆件约束扭转计算的样条里兹法。

Sapwood The outer living xylem cells in a tree trunk, consisting of secondary xylem elements, that are actively involved in water transport and food storage.

边材：由树干近外方的有生命的木质部细胞构成，包括次生木质部、薄壁组织和髓射线。在植物的水分运输及养料储存方面起重要作用。

Seeds ellipsoid to pyriform, dull to ± shiny; seed coat with thick inner layer of dense black sclerenchyma surrounded by outer layer of compact parenchymatous tissue; endosperm copious; embryo straight or nearly so; cotyledons ovate to elliptic, flattened; hypocotyl superior.

种子椭圆形到梨形，黯淡到发亮；种皮具厚的紧密黑色的厚壁组织内层，被紧密的薄壁组织外层所包裹；胚乳丰富；胚直立或近直立；子叶卵形到椭圆形，扁平；下胚轴上位。

Radome is one of the key parts of the active homing guidance weapon, which is a large complicated shell solid of revolution made of hard and brittle material.

主动导引头天线罩是主动式制导武器的关键部件之一，是由硬脆材料制成的大型薄壁回转体零件，其内廓形面属三维高次幂的复杂曲面。

The method for design thin-wall core box cast-in-site concrete hollow floor using common structural computing software is put forward and the scale for the magnifying stiffness coefficient of the spandrel beam and middle beam is discussed.

提出了采用常用的结构计算软件计算薄壁箱体现浇混凝土空心楼盖设计的方法，提出了边梁和中梁刚度放大系数的建议。

Tube spinning, a new technique of metal plastic forming, is recognized as an effective method to produce big thin-wall cylindrical workpiece and is widely used in industrial production.

筒形件强旋作为近代塑性加工中的一个新工艺，是公认的制造大型薄壁筒形件的有效方法之一，已在各工业部门得到广泛应用。

Tube spinning, a new technique of metal plastic forming, is recognized as an effective method to produce big thin-wall cylindrical...

筒形件强旋作为近代塑性加工中的一个新工艺，是公认的制造大型薄壁筒形件的有效方法之一，已在各工业部门得到广泛应用。

As thin-walled bars, stiffener s subjected to the axial pressure in ship panels may trip around their roots.

作为薄壁杆件，船体加筋板架中的加强筋在轴向压力的作用下可能发生绕定轴的侧向屈曲。

He modeling is the thin walled column model in which the shear walls connected each other in horizontal are regarded as a thin walled column, and the part between openings in vertical are regarded as a tie beam. The programs based on this kind of model is TAT. Two kinds of super element generalized- wall-element and elastic-slab-element are defined, which are condensed from shell element based on the theory of sub-structure, SATWE is based on the model.

AT采用薄壁柱模型，将同一层彼此相连的剪力墙墙肢作为一个薄壁杆件单元，把上下层剪力墙洞口间的部分作为连系梁单元；SATWE引入两种超单元：通用墙元和弹性楼板单元，采用子结构理论用在壳元基础上凝聚而成的墙元模拟剪力墙。

The process of its occurrence: in explants induced by living cells to restore all of its potential, into meristematic cells, then its derivative for the parenchyma cells and the formation of callus.

其发生过程是：外植体中的活细胞经诱导，恢复其潜在的全能性，转变为分生细胞，继而其衍生的细胞分化为薄壁组织而形成愈伤组织。

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％。