结构破坏

The molecular motion of amorphous region at high-frequency was found to be hardly affected during the stretching processes. In summary, elongation has created major but different influences on the morphology and molecular motion of the aforementioned four series of polymeric elastomers. For those elastomers like natural rubber and poly , elongation has induced crystallization of the noncrystalline or the soft segments. The crytallinitiy and the crystal thicknesses increase monotonously during the course of the stretching; On the other hand, the stretching processes for those semicrytalline copolymers like EMA and POE are rather complex, including the formation of crystal at relatively low λand the destruction of the crystal at the utmost λ. It revealed that stretching process has resulted in a decreasing of the thicknesses and a shortening of 〓C T〓s for the orthorhombic crystalline components.

拉伸对上述四个弹性体体系的聚集态结构都产生了很大影响，但是影响的程度和内容因体系而不同，对于本身存在着化学交联或者是物理交联的体系而言，拉伸导致了其中本来难以结晶组分的结晶，且结晶度随着拉伸比增加而增加，与此同时，体系结晶的晶片厚度也会逐渐增加；而对于结晶性共聚物体系，如EMA和POE，结晶区本来起到了物理交联的作用，在这种情况下拉伸的影响变得比较复杂，拉伸对于不同晶型的影响有所不同，在拉伸比较低的情况下体系总体的结晶度会有所增加，说明有新的结晶产生，当接近或达到断裂伸长比时，体系的结晶度会突然降低，含量占优的结晶会被拉伸所破坏，含量较低的结晶在整个拉伸过程中受的影响较小。

Because the waterproofing question on the concrete bridge deck has not been regarded enough, the concrete bridges were always destroyed prematurely. Especially all kinds of damages occurred on the bridge deck pavement, which have directly influenced safety of steering and the duration of bridge structures and have done a lot of traffic inconvenience and have caused huge economic loses and have not achieved the anticipated economic efficiency.

混凝土桥梁，由于防水问题一直没有得到足够的重视，导致其过早地遭到破坏，尤其沥青混凝土桥面铺装层普遍出现了各种病害，直接影响了行车的安全和桥梁结构的耐久性，给交通带来了很大的不便，造成了巨大的经济损失，没有达到预期投资的经济效益。

By adopting mechanical driving mode, the machine can be used for perform injection with stable pressure on bone pork, beef and poultry. When the injection needle contacts the bone, the downward movement is stopped by the pneumatic spring to protect the needle. The air chamber pressure of pneumatic spring is adjustable in order to ensure no damage on the bone.

用途采用机械驱动方式可对猪肉、牛肉及禽肉等带骨肉以稳定的压力注射，注射针在遇到骨头等硬物后可自动在气弹簧的作用下停止向下运行，保护注射针，气弹簧的气室压力可调节，保证对原料中骨结构不破坏。

Trough the modeling, the destroy process and mechanism of the single-layer reticulated shell under impact has been investigated.

通过和其静力特性的比较，研究了冲击荷载作用下结构的弹性和弹塑性响应特征，以及冲击荷载作用下的破坏过程和机理。

As the support structure,once it is failed the result is very serious,so the dynamic response of the short concrete filled steel tube column under different impact must be studied .

作为支撑结构，一旦破坏后果是非常严重的，因此我们必须考虑其在强动载作用下的动力学效应。

If short column is used,increasing its capacity of bearing or deformation as this paper introduces can enhance its anti-seismic performance so as to avoid brittle failure and ensure the structural safety.

短柱出现时，可以通过多种方法来提高短柱的承载力或变形能力，使短柱的抗震性能获得提高，从而避免发生脆性破坏，保证结构安全。

Keywords: blast load;reinforced concrete structure;shear failure;strain rate effect;finte element analysis

中文关键词：爆炸荷载；钢筋混凝土结构；剪切破坏；应变速率效应；有限元分析

In this work, the Phisweep technique is applied in coating anisotropic films. During the deposition, the periodical sweep of the substrate will break the anisotropic self-shadowing effect that causes inhomogeneous microstructure and improve the fan-out phenomenon.

中文摘要本篇论文利用方位角扫瞄技术制镀非均向性光学薄膜，藉由基板来回扫瞄能破坏自我遮蔽效应的非均向性，改善倾斜柱状结构在垂直沈积平面方向发生扇形扩张的现象。

It is easy to find that the broken area is the middle section between the pre-atress bar.

结构的破坏截面在预应力钢筋箍中间的截面上。最后，为减少模型中的弱约束区，作者加密了模型中的钢筋箍，提出了优化方案。

As one of the most important osmoregulation actor, firstly,Proline plays a keyrole in the osmotic potential adjustment in plant cells. Secondly, Proline can preventNaCl from damaging the structure of biomacromolecule in cells. Thirdly, the highdissolubility and non-rejection capability of Proline can enlarge the solution volumnof the cell, so the concentration of salt will be diminished in cytoplasm and the saltstress will be relieved. Forthly, the accumulation of Proline could prevent thedehydrolysis from sap cavity in cytoplasm. Fifthly, the synthesis of plant chlorophyllwill be diminished under the salt stress, but the Proline can provide request ofchlorophyll synthesis.

脯氨酸作为渗透调节剂对植物体细胞渗透势的变化起重要作用：一，在盐胁迫下，脯氨酸在植物体内是一种重要的渗透调节剂，它是一些高等植物和绿藻抗盐和抗旱的主要渗透剂之一；二，脯氨酸可以保护细胞中的生物大分子的结构，使之不被NaCl破坏，并能维持其完整的水合范围；三，脯氨酸的高度溶解性以及其对植物各种酶活性不抑制性，可以扩大细胞的溶解容积，从而降低细胞质液中盐的浓度，减轻盐的胁迫作用；四，细胞质中积累的大量脯氨酸可以防止液泡对细胞质的脱水作用；五，在盐胁迫下，植物叶绿素的合成受到抑制，叶绿素的合成需要脯氨酸。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。