The general situation of production technique and tensile mechanism of biaxial orientation PVC-U tubing are introduced, and their characteristics are explained, which have certain instruction to realize their commercial application.

Progress of recent studies on the deformation mechanism for spherulites of isotactic polypropylene ( I PP) in the uniaxial and biaxial orientation process was introduced.

介绍了近来国内外对单向、双向拉伸过程中全同立构聚丙烯（iPP）晶体内部球晶形变机理的研究进展。

Biaxial orientation polyethylene terephthalate ( BOPET) film is widely used in printing, packaging and so on for its excellent comprehensive properties.

双向拉伸聚酯（BOPET）薄膜是一种综合性能优异的薄膜材料，广泛应用于印刷、包装等领域。

Development of Pearl Masterbatch for Biaxial Orientation Polypropylene Films

白色双向拉伸聚丙烯薄膜专用珠光母料的研制

Effect factor on high-speed biaxial orientation for BOPP speciality resin

共聚BOPP专用料高速拉伸影响因素

In this review methods of determining polymer orientation using X-ray diffraction are described. It includes uniaxial and biaxial orientation, as well as their calculating methods.

介绍了用X射线衍射法测定结晶聚合物材料取向度定义，单轴和双轴取向及其计算方法。

Current technical situation of producing biaxial orientation PVC-U tubing

PVC-U双轴取向管材生产技术现状

The modelling results suggest that biaxial extension dominates the isothermal squeeze flow process, with apparently negligible shear flow effects.

研究结果表明：GMT挤压流动过程中拉伸流动为主导流动，剪切应力的影响较小，可以应用拉伸流动模型来预测压力的大小。

Transverse Cracking of Cross-ply Laminates Subjected to Biaxial Extension Loading Cherishing Time

正交层板受双向拉伸时的横向开裂

The increase mechanism of dislocation and micro-voids in deep drawing sheet steel during forming paths of uniaxial tension, plane strain and equal biaxial stretch was studied by using positron annihilation lifetime method.

本文应用正电子寿命法研究了深冲钢板在单向拉伸、平面应变和等双向拉伸变形过程中的位错和微空洞增长机制。

The Analysis of the Shear Strength of Reinforced Concrete Restrained Members under Biaxial Bending

钢筋砼双向受弯约束梁抗剪强度的试验研究

The equivalent section method on the strength of reinforced concrete columns with biaxial bending

钢筋混凝土双向偏压构件承载力计算的等效截面法

Strength Calculation and Its Simplified Method for Reinforced Concrete Beams Subject to Biaxial Bending

钢筋砼双向受弯构件的强度计算及其简化方法

Calculation of the shear capacity of reinforced concrete beams under biaxial bending

双向受弯钢筋混凝土梁受剪承载力计算

Design technique of steel beam under biaxial bending

双向受弯型钢梁设计技巧

Fiber model is used to calculate the interaction of biaxial bending deformation in reinforced concrete columns. The effect of the system parameters on inelastic torsional response is evaluated: stiffness eccentricity es, yield strength eccentricity ep and lateral period T.

以纤维模型模拟双向地震作用下混凝土柱的双轴弯曲，考查刚度偏心es、强度偏心ep和自振周期T等因素对结构扭转的影响。

The results of the study have not been confirmed for the case of biaxial bending.

并未确认研究结果不否适用双轴弯曲情形。

Effects of thawing methods on the biaxial extensional viscosity of wheat flour dough

解冻方式对小麦面团双轴拉伸黏度的影响

In this paper, the calculating formula for biaxial load reinforced concrete column with rectangular section and the design method in engineering practice are analyzed.

本文分析了矩形钢筋混凝土柱在双向受压作用下的计算公式以及工程设计中常用的方法。

Plastic buckling of cylindrical shells under biaxial load

双轴载荷作用下柱壳的塑性屈曲

Experimental Limit Load Research and Stress Analysis to the Specimen with Part-through Slot under Biaxial Load

带凹坑双向试板的实验应力分析及实验极限载荷研究