查询词典 indentation

The main results of the investigation are as following:(1) Some important criteria for the design of multi-layer structure are acquired: the ratio of the layer thickness to the contact diameter should be controlled to a value about 0.8; increasing the number of the gradient layers and elasticity modulus of the top layer would benefit to the yield strength and the stress status at the interface.（2）By means of molecular dynamics simulations for a indentation and sliding process, it is discovered that dislocations of 45 direction to the surface occur in the surfaces layer, which is correspond to the direction of the plastic flows observed in the macroscopic continuous medium. The irreversible deformation caused by the dislocation and the atom piles at the surface are responsible for the irreversibility of the force response. They are also the main factors for the friction generation. The temperature and the indentation velocity have significant effects on the deformation behaviors of the material of the surface layer. The yield strength would increase obviously if the indentation velocity is greater than 10 m/s.（3）A method to evaluate the fracture toughness of coating by estimating the crack-density functionβof a Wicker''s indentation was proposed. Meanwhile a new surface treatment technology was developed using non-equilibrium plasma.（4）A MD-FE hybrid method and corresponding software was developed to analysis the tribological behaviors for multiplayer system.

研究主要内容和结果有：（1）得到指导梯度膜设计的几个准则：控制膜层厚度与接触半径比在0.8左右为宜；适当增加梯度层层数和顶层弹性模量，有利于提高抗屈服能力和改善界面处的应力状态；（2）通过对嵌入和滑动摩擦过程的分子动力学模拟，发现表层产生一个与宏观连续介质的塑性流动方向观测一致的45 方向位错；位错造成的不可逆变形和表面的原子堆积，是力的响应不可逆性的原因，也是构成摩擦力的主要因素；温度和嵌入速度对材料变形特性有显著的影响，当嵌入速度大于10 m/s时，屈服强度明显增加；（3）提出压痕裂纹密度系数β半定量判定膜层断裂韧性的方法；并开发出表面强化新工艺；（4）开发出分析表面摩擦学特性的MD-FE复合模拟方法和相应模拟软件。

The cracking of indentation was a new type of fracture problem. By using the energy release rate of boundary translation the fracture of indentation has been formulized and critical load and critical cracking angle of the indentation have been found.

压痕边界的开裂问题是一个新型的断裂力学问题，通过边界移动的能量释放率的分析给出了压痕边界开裂能量释放率数学表征，并给出边界开裂的临界载荷和临界开裂角。

If the indentation with cutter cut out paper edge will be affected by the indentation of positioning accuracy.

如果压痕后用切纸机不兵纸边裁切掉，不兵会感化压痕的定位精量。

Press the printer paper, Business card printing and membership card making can be divided into sheet-fed business card printing and membership card making and drum business card printing and membership card production, according to the indentation style, die-cutting machine indentation flat, round applanation, Rotary.

按承印纸张的差别，制卡和会员卡制作可不分为单张纸制卡和会员卡制作和卷筒制卡和会员卡制作，根据压痕步不天的差别，模切压痕机有陡压陡、方压陡、方压方之不分。

It was sort of like a muddy indentation in the sand. And in that indentation, the water sort of seeps up.

某种程度上说它就像是沙地中的一个泥坑，而且在这个泥坑里，可以说水是渗出来的。

Results: The surface of discs showed dim, shallowing wave-like structure in short indentation time, while in long indentation time we found gel losing, collagen bundles disclosing and cave-like damage.

结果：短时压缩使关节盘表面波纹状结构变浅、模糊；过长时间压缩可使其凝胶层脱落，胶原纤维束暴露或洞样缺损，尤其在关节盘中带。

Indentation is too small, the two rolls of contact pressure is small, the paper feed roller and smaller tribochemical, in the same feed rollers under tension reducing motor speed ratio; the indentation is too large, it will be closing the rubber roller and feed roll in on the PTFE contact pressure greater as a result of excessive heat, accelerated ageing of rubber roller, reducing its life.

压痕过小，则两辊的接触压力较小，送纸辊与纸张的摩擦也较小，在相同的送纸辊电动机速比下张力减小；压痕过大，则会使橡胶合压辊与送纸辊在对压运转过程中因接触压力较大产生过多的热量，加速橡胶辊的老化，减少其寿命。

This analytical approach shows that, as increasing the wear flat of indenter, the maximum indentation force needed to develop critical plastic zone increases and its corresponding critical penetration depth also increases slightly, Note that the effect of wear flat will affect rock fracture behavior. In addition, regarding the simulation of the effect of doubled-indenters, result shows that two adjacent indenters may interact each other as reaching the transient/critical relative space between indenters of 2~3. It dicpicts that a proper spacing arrangement between indenters may enhance a efficient mechanical cutting due to the less required maximum indentation force and energy dissipation.

由数值模拟之结果得知，当楔尖磨耗增加时，岩材产生脆性破坏之初裂贯切力随之增加，而其对应之临界贯入深度则亦微幅增加，故磨耗效应确会干扰岩材脆性破坏机制之形成；而由双刀效应之模拟，可知两贯切刀楔互制影响之破坏裂缝生、衍行为，当双刀相对刀距为时，岩材之破坏特徵有明显变化，即定义此为临界相对刀距，并探讨其产生脆性破坏所需初裂贯切力之变动范围及应力重叠区，由此得知适当之刀距安排将有助於减少能量之耗损。

Ruian City Reiter印刷机械厂India is a professional production equipment after the modernization of enterprises, with more than 20 years of professional manufacturing bronzing machine, indentation machine, tangent of the experience, products mainly applied to the plastic film, leather, rubber, paper materials Al telephone hot on the various platinum, while the paper cups in different specifications on the indentation, tangent trademarks, carton boxes and other printed materials, the use of a machine, is supporting all types of printing press equipment, applicable to the actual needs of small and medium-sized printing plant .

瑞安市瑞特印刷机械厂是一专业生产印后设备的现代化企业，具有二十多年专业制造烫金机，压痕机，切线机的经验，产品主要适用于在塑料片，皮革，橡胶，纸张的材料上烫各种电话铝铂，同时在不同规格的纸杯上压痕，切线商标，纸盒等印品，一机多用，是各类印刷机的配套设备，适用于中小型印刷厂的实际需要。

More asperities tend to interact with each other and affect the central contact zone in elastic-plastic contacts as compared with elastic contacts. The change of spacing and radius of asperities and indentation depth would influence the asperity interaction.

同弹性接触相比，在弹塑性接触过程中有更多的邻近粗糙峰对中心接触区发生作用，改变粗糙峰的间距、曲率半径和压下深度都会对其产生影响。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？