内外有高强度塑料，中间有钢丝支撑热压成形，任意弯曲不变形等特点。
And has the high strength plastic, the middle steel wire support hot forming, arbitrary bending deformation characteristics.
拓扑是一门数学，它研究的对象是物体在平滑变形(例如伸长、挤压、弯曲、但不得切断或连接起来)之下仍会保持不变的性质。
Topology is the mathematical study of properties that are unchanged when an object is smoothly deformed, by actions such as stretching, squashing and bending but not by cutting or joining.
在总厚度不变时，破坏载荷，弯曲强度及弹性模量都随金属厚度增加而增加。
Result When the whole thickness of the samples were determined, the fracture load, bending strength and elastic modulus were increasing according the increase of the metal thickness.
该方法基于塑性增量理论，应用塑性成形过程的体积不变假设和弯曲过程的平截面假设。
The proposed method is based on the incremental theory, volume invariance and planar cross_section are assumed.
复合成型后的材料不仅具有不变形、抗弯曲强度大，防水、防火及耐酸碱的特性。
The finish material are no distortion, no bending, water proof, fire proof and anti corrode from acid and alkaline.
复合成型后的材料不仅具有不变形、抗弯曲强度大，防水、防火及耐酸碱的特性。
The finish material are no distortion, no bending, water proof, fire proof and anti corrode from acid and alkaline.
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