查询词典 planar developable surface

The effects of different factors on the laser-induced graft polymerization on the PET surface were analyzed, and the mechanisms were discussed. The factors were: 1 Monomers with smaller molecules resulted in better modification than polymeric monomers. Acrylamide monomer was chosen as hydrophilic modifier finally; 2 Higher concentration of the monomer solution favored the graft reaction; 3 With the increasing laser fluence, the surface hydrophilicity of PET films increased at first, then decreased. More laser pulses led to a more hydrophilic surface; 4 Benzophenone as a photosensitizer hindered the graft polymerization; 5 The homopolymer retardant of ammonium iron sulfate hexahydrate in a proper concentration retarded the formation of homopolymers and promotes the graft copolymerization; 6 The solvent of monomer solution also affected the graft reaction. Different solvents functioned in different ways. Ethanol can promote the graft reaction because of the activity of hydrogen in its structure; 7 pH value of the monomer solution affects the polymerization rate, and a lower pH value was favorable to the graft reaction.

这些影响因素的作用分别为：1小分子单体的表面改性效果好，确定以丙烯酰胺为亲水性改性单体；2较高的单体溶液浓度有利于接枝反应；3激光能量密度增大，薄膜表面亲水性先显著增强，后又减弱；激光脉冲次数越多，改性后表面亲水性越强；4光敏剂BP对PET表面接枝聚合反应有阻碍作用；5适当浓度的均聚物抑制剂六水合硫酸铁铵能减少单体均聚物的生成，促进接枝聚合；6单体溶液的溶剂也影响接枝聚合的反应进程，不同溶剂的影响作用原理不同，含较活泼氢的乙醇能促进接枝反应；7溶液pH值影响单体聚合速率，pH值较低有利于接枝反应。

Cutting phaseWhen the protruding peak of holystone surface and coarse raceway surface is contacted, because osculatory area is lesser, the pressure on unit area is greater, below constant pressure action, holystone gets above all of workpiece " a traditional method of indicating the pronunciation of a Chinese character by using two other Chinese characters is cut " action, make the part of holystone surface grinds bead to fall off with disintegrate, show a few new grind bead and blade edge ......

切削阶段磨石表面与粗糙滚道表面的凸峰接触时，由于接触面积较小，单位面积上的压力较大，在一定压力作用下，磨石首先受到工件的"反切削"作用，使磨石表面的部分磨粒脱落和碎裂，露出一些新的锋利的磨粒和刃边。与。。。。。。

Also because of the road turned to the bottom of the top players on the team at the top of the ramp, the rock loose the season still has the possibility of the Rolling Stones hit the players, Yakou the 50-100 m section of the rock surface is a monolithic block staggered zone, rock face an average of 6-7 meters high, 70-80 degrees slope is very smooth too laborious climb directly to undesirableGreat can not see well because of the snow line, and only a walk around the rock surface, in the cross section of rock surface from time to time is close to the ridge walk, the most recent is only one meter away from the cliff, and at the foot of ice or hard snow if the time is easy to slide down the ridge, more dangerous.

另外因为路线转向上方队员就在下方队员斜上方，岩石松动的季节还是有滚石击中队员的可能，垭口上50-100米路段，是整块整块的岩面交错的地带，岩面平均高6-7米，坡度70-80度，很光滑直接攀上太费力不可取，由于雪大看不出好的路线，只有绕着岩面走，在跨越岩面时有部分路段是贴着山脊走，最近的离悬崖仅一米，而且脚下如果结冰或者是硬雪时很容易滑下山脊，比较危险。

The solid immersion lens for near field optical storage has one negative refraction medium layer coated to the lower surface of traditional solid immersion lens to re-focus laser beam focused onto the lower surface of the solid immersion lens onto the surface of CD.

本发明公开了一种用于近场光存储的固体浸没透镜，在传统固体浸没透镜的下表面涂覆上一负折射介质层，该负折射介质层将聚焦于固体浸没透镜下表面的激光重新聚焦于碟片的表面。

A handle (43) is provided on the intermediate post (39) at the left surface (36) of the machine enclosure, which is a ingathering handle rotating between the containing device on the outer surface of the machine enclosure body (31) and the holding position protruding from the machine enclosure body (31) outer surface to the outside.

扶手(43)是能够在沿着机壳主体(31)的外表面的收容位置以及从机壳主体(31)的外表面向外侧突出的把持位置之间转动的收纳式扶手，即使在门(32)关闭的状态下，通过将扶手(43)转动到把持位置，在从构成机壳主体(31)的外表面的中间支柱(39)的外表面向外侧突出的状态下也能把持扶手(43)，并且通过将扶手(43)收容在收容位置，而能够收容在与门(32)的外面相比更靠近内侧的位置。

The traditional inside stack angle was corrected, and the last charge surface shape was used as initial charge surface shape for next charging to reduce the effect of initial charge surface shape on simulation result.

将传统的炉料内堆角公式进行修正，此公式更符合高炉布料的实际；将上次布料的料面形状作为下次布料的初始料面，减小了初始料面对模拟结果的影响。

The comparison of the derivative form of fixed aberration correction surface has been made with that of integral form surface as well as that of spherical surface in concentrating the solar ray.

同时，我们对以上两种不同表达式的曲面做了固定相差修正，并将这两种曲面，以及圆球面，分别做了聚光效果的模拟和比较。

According to the electric field integral equation of the surface, the recursive solution for the induced current on the slight rough surface is derived using the perturbation expansion of the surface, and the method for computing the interaction field is given.

根据粗糙表面电流积分方程并利用表面微扰展开，得到了微粗糙面表面极化电流的迭代解，给出了耦合电场的计算方法。

Combining the experimental results and theoretical analysis, the following work has been accomplished.(1) Reasons of the decrease of interelectrode capacitance and the increase of discharge gap caused by the powder suspended in dielectric fluid are explained. And the mechanism that surface quality of workpiece improved by powder-mixed EDM is analyzed from this viewpoint.(2) The variation regularity of the percentage of silicon on the machined surface of workpiece has been summarized according to the experiment results when silicon powder was added into the working fluid. The entropy is introduced to explain the reasons for this variation regularity by thermodynamics.(3) The dimensional accuracy is greatly influenced by the overcut resulting from discharge gap and electrode wear in practice application. Empirical formulas for the overcut in EDM and powder-mixed EDM are established based on the experimental results using the ternary linear regressive method in this paper.(4) The influence of main factors on the machined surface characteristics has been evaluated based on the orthogonal experimental design method.

通过一系列普通电火花加工与混粉电火花加工的对比实验，运用工艺实验和理论分析相结合的方法，重点做了以下工作：(1)探讨了粉末颗粒导致极间电容减小、放电间隙增大的原因，并从这个角度解释了混粉电火花加工可以改善工件表面质量的机理；(2)以混合硅粉的电火花加工为例，实验得出峰值电流和脉冲宽度对加工表面层成分中硅元素含量的影响规律，并引入熵的概念从热力学的角度对硅元素含量变化的原因寻找了理论依据；(3)在实际加工中，由于粉末的加入使放电间隙变大，这使得混粉电火花加工的尺寸精度难以控制，本文利用三元线性回归的方法，在实验数据的基础上，建立了两种电火花加工过切量的计算公式；(4)将正交试验法应用于混粉电火花加工实验研究，并通过对实验指标极差的直观分析，得出各电参数对加工指标影响的敏感程度。

The material not only Scratch to a variety of interior wall surface and the surface, but also to the wood floor Scratch under the surface.

该材料不仅可刮涂到各种室内墙壁面和物体表面，而且可刮涂到木地板下的地面。

Pachomius manual labour was organized as an essential part of the monastic life; and since it is a principle of the monks as distinguished from the mendicants, that the body shall be self-supporting, external work of one sort or another has been an inevitable part of the life ever since.

根据圣pachomius体力劳动组织作为一个重要组成部分寺院生活；以来，这是一个原则的和尚，作为有别于乞丐，该机构应自支撑，对外工作的这种或那种已一个必然的一部分，生活至今。

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。