查询词典 depth of field

The presented concept of "beam-distance acoustic image" and "beam-depth acoustic image" provide torpedo near field control and guide characteristics.

提出目标近场波束-深度和波束-距离二维声图象的概念，为鱼雷末制导阶段提供了目标近场回声二维特征。

The purpose of this study by the field of private preschools park industry depth interviews and collated into enhancing the quality of education to understand the success of the three cases for private preschools Park study.

本研究旨在藉由实地对私立幼托园所业者的深度访谈，并归纳整理后了解成功且具教育品质之三家个案私立幼托园所为研究对象。

Through the numerical solution of fluid field and resistance of the trimaran model in different water depth and forward speeds the computational results are compared with experimental data.

通过对不同水深和不同航速下船模周围流场的模拟和对总阻力的求解，并将计算所得结果与实验结果进行比较，表明了FLUENT软件对处理浅水域三体船粘性流场模拟和计算的有效性和准确性，为将CFD软件应用于三体船船舶性能研究的实用性和准确性提供了一些依据。

On the basis of the method of determining the boundary of the bright and dark springes, which is defined in the paper, the sizing methods of 2D holographic image and 3D holographic pattern are offered, so that the range of the field depth and the efficiency of image processing can be improved.

并且在本文提出的明暗斑条纹边界确定方法的基础上，给出了确定颗粒尺寸的二维全息影象测定法和三维全息图判别法，从而提高了测量的景深范围和图象处理效率。

By means of numerical simulation in different heat conduction processes, the steady-state temperature field in upper arm skin tissue, the temperature distribution and the burn depth threshold after 15 s exposure to a heat source at 90℃, the surface temperature rising of skin subjected to a surface-applied constant heat flux, and the steady state temperature elevation distribution under the thermal insulation, are obtained.

通过数值模拟，获得了不同皮肤组织结构模型下上臂皮肤组织内的稳态温度场和90℃高温热源作用15 s后皮肤组织内的温度分布，以及皮肤组织热损伤深度的变化、常热流作用下皮肤组织表面的温升曲线和表面绝热条件下皮肤组织内的稳态温升分布。

Several parameters including drilling depth, thickness of work piece, incident angle of laser beam, and taper degree of drilling hole are used to analyze the laser energy demand and temperature field.

本篇将藉由一项新的学模式－三维积体点热源模式为基础，计算钻孔形成所需的功以及温场。

New AV No.1 will be fixed by adding two writers, one who has produced the book is specifically written master of steel shells; another one is for an in-depth experience of sex is not at large but also a woman's beauty Spice Girls, she will tell you that in a field behind sex intense, her experience that?

New AV No.1将会固定加入两位写手，一位是曾经出过书、专写钢弹的高手；另外一位是对於性爱有著深入体验而且又一点都不大女人的美女辣妹，她将会告诉各位，一场场激烈的性爱背后，她的体验为何？

According to present achievement, when subsidiary stress caused by distributed load is less than 20 percent of static lateral pressure induced by gravitation, distributed load's effect may be ignored. Therefore, the expression of topograpthy influence depth on self-weight stress field is obtained.

已有研究成果表明，当由外载引起的附加应力小于由重力引起的静止侧压力的20%时，则可以不考虑外载的影响，这样便导出了地形对自重应力影响深度所满足的函数关系式。

Aiming at the frequent occurrence of drill-string fracture during gas drilling in the Puguang gas field, this paper, based on the statistical analysis of accidents on fields, makes in-depth investigation into the origins of drill-string accidents in aspects of peculiar drilling medium, different rock-breaking methods, and the vibration of drill string during the drilling process. Through macro, micro and material analysis of the fracture surface of drill string, the law of drill-string failure due to fracture is discovered and the fatigue fracture is found out to be the main type of drill-string fracture.

针对普光气田气体钻井过程中存在的钻具断裂频繁的问题，在对现场事故统计分析的基础上，从特殊的钻井介质、不同的破岩方式以及钻井过程中钻柱共振等方面定性分析了钻具断裂的原因；通过对钻具断口宏观、微观及材质分析，找到了钻具断裂失效的规律和主要形式－疲劳断裂。

In order to bring about the spatial depth resolution of the image data obtained, the method according to the invention comprises the following steps: an electromagnetic wave is beamed onto the surface of a photonic mixed element comprising at least one pixel, the pixel having at least two light-sensitive modulation light gates Gam and Gbm and associated accumulation gates Ga and Gb; modulation light gate voltages Uam and Ubm, which are configured as Uam=Uo Um and Ubm=Uo-Um, are applied to the modulation light gates Gam and Gbm; a direct voltage, whose magnitude is at least the same as that of the total of Uo and the amplitude of the modulation voltage Um, is applied to the accumulation gates Ga and Gb; the charge carriers produced in the space charge region of the modulation light gates Gam and Gbm by the incident electromagnetic wave are subjected, as a function of the polarity of the modulation light gate voltages Uam and Ubm, to the potential gradient of a drift field and drift to the corresponding accumulation gate Ga or Gb; and the charges qa and qb which have drifted to the accumulation gates Ga and Gb, respectively, are diverted.

为了使得采用这样一种方法获得的图象数据具有空间深度分辨率，按照本发明的方法包含下述步骤：使电磁波成束在至少包含一个象素的光混合元件的表面上，该象素至少具有两个光敏调制光门G am 和G bm 以及相关的累积门G a 和G b ；将调制光门电压U am 和U bm 施加到调制光门G a 和G b 上，而调制光门电压的构成是U am=U o U m，U bm=U o -U m；将直流电压施加到累积门G a 和G b 上，而直流电压的幅度至少与U o 和调制电压U am的幅度的总和相同；使由入射电磁波在调制光门G am 和G bm 的空间电荷区中产生的载流子经受漂移场的电位梯度，并漂移到相应的累积门G a 或G b ，而电磁波是调制光门电压U am和U bm的极性的函数；已经分别漂移到累积门G a 和G b 的电荷的方向反向。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。