查询词典 depth of field

The lens determines the field of view, the depth of focus, and other optical factors the directly affect the quality of the image detected by the camera.

透镜确定视野，深度焦点，并且其它光学因素这个图像质量查出由这台照相机的直接地影响。

The application of the combined shallow seismic reflection method and Rayleigh surface wave method to the field quality inspection of the leakage-proof wall shows that the integrated application of the two methods can not only detect the continuity of the leakage-proof wall and the burial depth of the roof and the footwall rather effectively but also measure the thickness of the wall quite accurately.

采用浅层地震反射波法和瑞雷面波法相结合，对大堤防渗墙或隔渗墙的质量进行检测结果表明，两者的综合应用，不仅能有效地检测防渗墙或隔渗墙的连续性和顶底板埋深，而且能较为准确地获取墙的厚度这种综合方法为无损检测墙的质量提供了一种行之有效的检测手段

The longitudinal conjugated property of ideal optical system ;2. Starting from the principle of photograph formation by an ideal optical system , this paper derives the formulas of field depth and hyperfocal distance.

本文从理想光具组成像原理出发推导出景深和超焦距的公式，物理思想明确，并结合公式绘出了景深与有关参量的直观图，摄影者容易理解和掌握。

The whole variable features and regularities of geo-stress field are summed up in Xiluodu deep-cutting gorge. The results reveal that the major and minor principal stress of measure point increase lineally with the vertical depths in the gorge area, and also indicate that the coefficient a〓, a〓, b〓, and b〓 of the linear equation are changeable with the erosion depth of rock mass.

认为该峡谷区中，谷河底部最大、最小水平应力量值总体上具有随深度增加而线性增大的特征，但其线性方程的系数a〓、a〓、b〓、b〓，随地表高程的低高或者说河谷侵蚀厚度的深浅而变化；岸坡山体中仅存在应力降低区和应力相对平稳区而没有明显的应力增高区，应力降低区与应力相对平稳区的分界线在水平埋深135～165m之间。

Enterprises leading products for SL3NB, QZ3NB, QF pump, QZ-9 series of drilling pump, the campaign mainly used for different depth of the oil field drilling, workover, cementing, water injection and other mining operations, industrial and mining enterprises can also be used for other transportation Mud, clay plastic, mortar, and other media.

企业主导产品为SL3NB、QZ3NB、QF泵、QZ-9等系列钻井泵，该系列主要用于油田不同井深的钻井、修井、固井、注水等工矿作业，也可用于其它工矿企业输送泥浆、粘土胶、灰浆等介质。

The depth of cooperation in the economic field to explore the convening of talks, which marked the 12th since the Beijing-Hong Kong Economic Cooperation Symposium, the first time established a special program started, more than 20 visits to Hong Kong to participate in negotiations of the old-established enterprises, to become the capital of more than 300 its century-old representative of the collective debut in Hong Kong.

据北京商务局消息，首批平均年龄超过百岁的老字号优秀代表20余家，将于明天在会展中心就零售、餐饮、食品加工和制造业等经济领域的深度合作召开洽谈探讨，这标志着自12届的北京香港经济合作研讨洽谈会以来，首次设立的专场计划启动，20余家来港参与洽谈考察的老字号企业，成为京城300余家百年老号的代表，在香港的集体亮相。

Based on plenty of field investigation and collection of images, in order to make double pectination of the data and theories of the auspicious image, this dissertation makes an investigation in depth, which mainly focuses on the existent matter, manner and fortune of the time.

论文建立在丰富的田野调查和图像搜集基础之上，走访了浙江、江苏、四川、云南、北京、安徽、辽宁等地，旨在对吉祥图像进行资料和理论的双重梳理，着眼于吉祥图像在当代的生存内容、方式和际遇，做出深入探索。

The characteristics of temperature field of sliding surface have been studied in the set-out stage of large highspeed rockslide, computed the depth of heat conduction by highspeed friction, furthermore, analyzed the vaporization of pore water in the sliding zone.

详细地研究了大型高速岩质滑坡启程活动阶段滑面瞬态温度场的变化规律，导出了滑面温度变化的方程式，计算了头寨滑坡启程活动阶段由于强烈地高速摩擦产生热量的传导深度，进一步对头寨滑坡启程活动阶段滑带孔隙水汽化效应进行了研究。

According to the theory of smooth averaged sound field in shallow water, the searching scope of active sonobuoy is deduced when the depth of submarine is changed.

利用平滑平均声场理论推导了潜艇深度变化后浮标的探测范围，从检测概率和探测距离两个方面研究了潜艇采用不同规避航向、航深、以及海况对浮标作战效能的影响。

Based on international and national risk management theory and application results as well as characteristics of complex systems, hierarchical holographic modeling, monte carlo simulation, fuzzy comprehensive evaluation, surrogate worth trade-off method and multiobjective risk impact analysis are exploringly and methodologically introduced into risk management research of complex systems for exploring the extent and depth of theory and application about this field, and increasing their possibilities.

本文基于国内外风险管理理论和应用研究的已有成果，针对复杂系统管理的特点，从方法论的角度，将等级全息建模法、蒙特卡罗仿真模拟、模糊综合评价法、替代值多目标权衡分析以及多目标风险影响分析法探索式地引入到复杂系统的风险管理研究中，为拓展该领域理论和应用的广度及深度增强了更具实现的可能性，为跨学科的系统风险管理实践提供了有力的支撑。

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％。