查询词典 surface area

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。

From this model the height of 500 mb surface andthe thickness between a certain selected isobaric surface in the vicinity of thetop of friction layer and 500 mb surface can be forecasted.

在某些近似下，作者推导了一组闭合的预告500mb 高度和500mb 与某等压面之间的厚度的方程式；把它推广，作者还求出了一组预告三层等压面高度的方程式。

The results showed as followed :（ 1 ） The most important factor of atmospheric general circulation controlled and influenced the immigration of WBPH＇s populations was the patterns and the tempo-spatial changes of potential height field on 850hPa isobaric surface,（2） There were relative coincident air streams with a northern exposure on 850hPa isobaric surface during the migrations northward of WBPH and there were concurrent airflows with a southern exposure on 925hPa isobaric surface during the migration southward.

利用MM5中尺度数值预报模式和由PCVSAT系统接收的气象数据对2个典型的白背飞虱南、北迁降落过程的大气背景进行了数值模拟和客观分析，模拟和分析结果表明：（1）850hPa等压面上气压场的配置及其随时空的演变是控制和影响白背飞虱迁入的最重要的大气环流因素。

The isometric surface of the free form surface is generated for NC machining of the negative or positive model of the free form surface.

通过求等距面的方法，本论文解决了数控加工中的阴阳模加工问题。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。