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The worst frost damage occurs in areas that are usually frost-free, where exposed mature tropical trees, such as mango, or indigenous plants, such as tree ferns and eucalypts, can be set back or even killed.

最严重的霜冻损害发生在通常无霜冻的地区。在这些地区，受影响的成熟热带树木，例如芒果，或蕨树和桉树这些当地植物，会生长受挫甚至死亡。

The worst frost damage occurs in areas that are usually frost-free, where exposed mature tropical trees, such as mango, or indigenous plants, such as tree ferns and eucalypts, can be set back or even killed.

最严重的霜冻一般发生在平常无霜冻的地区，在这些地区，成熟的热带树木都裸露在外面，如芒果或椤和桉树等本地生植物。一旦发生霜冻，这些植物会严重受创甚至死亡。

The worst frost damage occurs in areas that are usually frost-free, where exposed mature tropical trees, such as mango, or indigenous plants, such as tree ferns and eucalypts, can be set back or even killed.

霜冻危害最严重的情况往往是发生在那些常年不会结霜的地方，例如芒果树，以及椤、桉之类的热带植物一旦遭受冻霜，很可能就会死掉。

The worst frost damage occurs in areas that are usually frost-free, where exposed mature tropical trees, such as mango, or indigenous plants, such as tree ferns and eucalypts, can be set back or even killed.

霜冻造成的最大的损害的地区是那些几乎没有霜的，有成熟芒果热带树，有当地的桉树植物和椤的地方。霜冻能致使这些热带植物暂缓生长并致死亡。

The worst frost damage occurs in areas that are usually frost-free, where exposed mature tropical trees, such as mango, or indigenous plants, such as tree ferns and eucalypts, can be set back or even killed.

最坏的霜冻范围大抵是那些没有掩蔽的，它们是暴露在外的成熟热带树，例如芒果或者本地生植物。例如椤和桉树，它们会退化或者坏死。

The worst frost damage occurs in areas that are usually frost-free, where exposed mature tropical trees, such as mango, or indigenous plants, such as tree ferns and eucalypts, can be set back or even killed.

在一些无霜冻地区也会出现破坏性较大的霜冻。霜冻可以使芒果等暴露在外的成熟的热带树木以及椤和桉树等本土植物受到损伤，甚至将其冻死。

The worst frost damage occurs in areas that are usually frost-free, where exposed mature tropical trees, such as mango, or indigenous plants, such as tree ferns and eucalypts, can be set back or even killed.

通常在无霜区，一些热带树木，比如芒果树，或者是本地生植物，就像椤树，桉树受霜冻灾害最深，霜冻后，这些树的生长会滞后，甚至枯萎死亡。

As dollars accumulated outside America, the Euromarket, where lenders and borrowers were free to set rates between them, developed in London.

随着美元在美国之外积累，欧洲市场成就于伦敦，这里借贷双方可自由商定利率。

Before you set fire to your PC to stop IE Security popups and crashes, I'll show you how to get rid of IE Security for free.

在您放火电脑停止IE的安全弹出和崩溃，我会告诉您如何摆脱IE的安全是免费的。

In this dissertation the"Penalty"finite element method was employed to compute the velocity of the three-dimensional flow of power-law fluid in a profile die. In order to decrease the needed computer memory and raise the stability of numerical simulation, a set of decoupled methods such as PFEM, pseudo-body force method and transformation of momentum equation to the elliptic equation was developed to establish the general finite element equations to compute the distributions of velocity and viscoelastic stress of the three-dimensional viscoelastic flow of the Phan ThienTanner fluid in a profile die. During numerical simulation of the extrudate swell of the PTT fluid, the flow in the die and out of the die was analyzed separately, which demands less computer memory. The key techniques used in numerical simulation of the three-dimensional extrusion from dies such as decision of boundary conditions, creation of initial velocity field, selection of penalty factor, high Weissenberg number problem , regeneration of the free surface were studied in detail.

中文题名聚合物异型材口模挤出三维流动研究副题名外文题名 Study on three-dimensional flow of polymer melts during the process of profile extrusion from dies 论文作者涂志刚导师柳和生包忠诩教授学科专业材料加工工程研究领域\研究方向学位级别博士学位授予单位南昌大学学位授予日期2001 论文页码总数148页关键词挤出成型聚合物材料挤出口模聚合物异型材馆藏号BSLW /2003 /TQ320 /9 本文建立了求解挤出口模内幂律流体流动速度场的通用三维罚有限元模型；对于非线性粘弹性的Phan Thien-Tanner流体，为了降低模拟计算对计算机硬件的要求，并使模拟计算更加稳定，采用了一种去耦算法，包括罚有限元方法、拟体力方法和动量方程的椭圆类方程转化方法，并建立了求解速度场和粘弹性应力场的总体有限元方程；对于PTT流体的挤出胀大问题，提出了挤出胀大熔体口模内外分离模拟法，这样可以显著降低数值模拟对计算机硬件的要求。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。