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Materials with various nanostructures have attracted increasing interest due to their special properties.

纳米材料是当前材料研究的一个重要领域,对不同微观形貌的纳米材料在不同领域中的应用也是研究的热点。

Interface or interphase is a significant component of many existing materials and new kinds of materials, and it ...

界面是许多已有材料和新型材料的重要组成部分,它的存在对材料整体力学行为有着重要影响。

The heat transfer and burning behavior of the intumescent fire-retardant polypropylene were studied by the cone calorimeter to establish an essential physical model for the intumescence process in fire.

通过对膨胀阻燃聚丙烯材料在锥形量热仪实验条件下燃烧的分析和研究,建立了能够描述膨胀阻燃材料升温、燃烧过程的传热传质数学模型,分析了传热传质对材料裂解行为的影响。

In addition, simplex algorithm is used to inverse calculation the material parameters and thickness from experimental data and the results are quite good.

本文利用已发展成熟的弹性波理论,针对均质等向性弹性体,以所得的理论正解作为反算过程中的正算解,并利用一种几何搜寻的最佳化方法同时反算材料参数及厚度,反算过程中所使用的材料参数均为未知,仅须给予几组材料的预测值。

On the base of the analysis, the following standpoints are presented definitely. There is no such a so-called zone with low density near the inwall of the lining. Upon the explosion terminates, the mortar would lose characteristics of the fluid. The compression strength of the lining layer formed by explosion is higher than that of a reference block tested.

在假定材料服从Tresca屈服准则或Coulomb屈服准则的条件下,得到了圆形井筒和球形腔体最大扩张压力p〓的计算公式;衬砌材料塑性区应力σ〓、σ〓和土体塑性区的应力σ〓、σ〓的计算公式;土体弹性区的应力σ〓、σ〓和径向位移u〓的计算公式;衬砌材料与土体交界面半径R〓以及土体中弹塑性区交界面半径R〓的计算公式。

In this paper, based on piezoelectric ceramic, composite and experimental mechanics theories, a kind of 1-3 orthogonal anisotropic PCM sensor is developed, and the sensing principle is analyzed to describe sensor behaviors. In order to determine strain and stress on isotropic or orthogonal anisotropic component surface, the relationships between strain and stress are established. The experimental research on 1-3 OAPCM sensor is carried out in uniaxial and biaxial stress states.

本文在压电材料基本理论、复合材料设计方法和实验力学的基础上,构造了一种1-3型正交异性压电复合材料传感元件,探讨了它的传感原理,推导了该种元件的传感方程和用于各向同性材料/正交各向异性材料构件表面测量的应力-应变关系,并在单向和双向应力状态下,进行了实验研究。

This technology, which does not damage the internal structure of the material and features no discrimination on materials, high quality kerf, low consumption of material and intelligent cutting, is widely applied to the cutting of metal, nonmetal and composite material plates and the processing of ceramic, glass and stone materials for mosaicking.

因其不破坏材料内部组织,对切割材料无选择性,切缝质量好,节省材料,切割智能化程度高等优点被广泛应用于各种金属,非金属,复合材料板材的切割;以及陶瓷,石材的拼花加工工艺。

Grinding wheel is usually mounted on surface grinding machine, external circular grinding machine and internal circular grinding machine, and can also be mounted on grinding wheel machine, knife grinder and universal cutter grinder for grinding of cutting tool. According to different functions, grinding mode and type of grinding machine, grinding wheel is manufactured into ones with all kinds of shapes and sizes, and common grinding wheel includes plane grinding wheel, cylinder grinding wheel, double hypotenuse grinding wheel, cup grinding wheel, flaring cup wheel, disc wheel, centerless grinding wheel, etc. The types of products include external circular, plane and centerless grinding wheels used for f

公司的产品类型有用于钨钢硬质合金的精粗磨削加工的外圆磨、平面磨、无心磨砂轮;有用于陶瓷、氧化锆白陶瓷、黑陶瓷行业的CBN/SDC金刚石平形砂轮、精密切割片、平行加强形砂轮和开槽电镀磨头;用于钢化玻璃,灯饰玻璃,水晶玻璃,磁性材料行业的CBN/SDC金刚石精密切割片,青铜磨盘,青铜切割片,平行双粒度磨盘和小磨头,深加工行业的CBN电镀和烧结磨轮、抛光磨盘;用于高速钢,45#钢的剪刀、锯片、刀片的精粗加工,用于加工硅片材料、铁氧体及其他材料的金刚石工具;以及其他行业需要的各种要求的非标金刚石工具。

Grinding wheel is usually mounted on surface grinding machine, external circular grinding machine and internal circular grinding machine, and can also be mounted on grinding wheel machine, knife grinder and universal cutter grinder for grinding of cutting tool. According to different functions, grinding mode and type of grinding machine, grinding wheel is manufactured into ones with all kinds of shapes and sizes, and common grinding wheel includes plane grinding wheel, cylinder grinding wheel, double hypotenuse grinding wheel, cup grinding wheel, flaring cup wheel, disc wheel, centerless grinding wheel, etc. The types of products include external circular, plane and centerless grinding wheels used for fine and rough grinding machining of t

公司的产品类型有用于钨钢硬质合金的精粗磨削加工的外圆磨、平面磨、无心磨砂轮;有用于陶瓷、氧化锆白陶瓷、黑陶瓷行业的CBN/SDC金刚石平形砂轮、精密切割片、平行加强形砂轮和开槽电镀磨头;用于钢化玻璃,灯饰玻璃,水晶玻璃,磁性材料行业的CBN/SDC金刚石精密切割片,青铜磨盘,青铜切割片,平行双粒度磨盘和小磨头,深加工行业的CBN电镀和烧结磨轮、抛光磨盘;用于高速钢,45#钢的剪刀、锯片、刀片的精粗加工,用于加工硅片材料、铁氧体及其他材料的金刚石工具;以及其他行业需要的各种要求的非标金刚石工具。

The microscale effect, elastic-plastic theory and material nonlinearity of laser shock processing were analyzed and discussed.

综述和分析了激光冲套金属材料的微尺度效应、材料的弹塑性理论、材料的非线性。

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She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了,但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场,你等着挨绳子吧!

Several theories about reigniting and extinguishing of the arc have been refered.

本文综合考虑了几种电弧重燃和熄灭理论。