Depth of field The distande between the nearest and furthest points of the subject which are acceptably sharp. Depth of field can be increased by using small apertures ,short focal -length lenses or by taking the photograph form further away.

(1)测深计，(2)字尺:(1)量度印刷版的蚀刻深度的测微尺。(2)用来量度字体的字身或字行的进给量的印刷字体用尺。

属类：行业术语-印刷-

“one central task and two focal points” are concise, explicit and scientific generalizations of China’s current practice of socialist construction

“一个中心两个基本点”简洁、明确、科学地概括了中国现阶段社会主义建设者的任务

属类：综合句库--

In 1999, IBM established the Linux Technology Center as a focal point for its technical contributions to Linux, featuring a dedicated staff of engineers that manage the transfer of IBM technology to the open source community.

1999年，IBM设立了Linux技术中心，集中完成Linux技术工作，由专门的工程师负责将IBM技术移交给开放资源组织。

属类：IT行业-功能介绍-IBM抓住SOLARIS向LINUX移植的新时机以降低用户开销

Expression of SH2-Bβ in Parietal Lobe of Focal Cerebral Ischemia/Reperfusion Rats

SH2-Bβ在局灶性脑缺血再灌注大鼠顶叶皮质的表达

属类：行业术语-中文论文标题-

Protective Effect of ONO-1078, a Leukotriene Receptor Antagonist, on Focal Cerebral Ischemia Induced by endothelin-1 in Rats

白三烯受体拮抗剂ONO-1078对内皮素-1诱导的大鼠局灶性脑缺血的保护作用

属类：行业术语-中文论文标题-

This meeting also decided that transportation is content that is focal to secondary region co-operation

本届会议还确定交通是次区域重点合作的内容。

属类：综合句库--

collapses and mud--rock flows, to delimit zones for focal control, and to take prevention and control measures.

崩塌和泥石流隐患进行全面调查，划定重点防治区，采取防治措施。 

属类：法学专业-中国法律-防洪法

Variable focal length (cylindrical)lens

变焦(距)(圆柱)透镜

属类：综合句库-未分类-

"And it’s also an OECD focal work in the field of science, technology and industry to help identifying ""best practices"" for the knowledge-based economy."

并希望为"知识经济"在知识、资讯和科技领域如何取得"最佳实践"做出探索。

属类：社会文化-新闻报道-

Focal Shift and Focal Switch of Partially Coherent Light in Dual Focus Systems

部分相干光在双焦聚焦系统中的焦移和焦开关

属类：行业术语-中文论文标题-

Experimental Study on Influence of Shenfu Injection(参附注射液)on NO Content and NOS Activity in Brain Tissue of Rats Injured by Focal Cerebral Ischemia and Reperfusion

参附注射液对局灶性脑缺血再灌注大鼠脑组织NO含量和NOS活性的影响

属类：行业术语-中文论文标题-

Precision is imperative, for the collar of any garment is usually one of the focal points of design.

操作要绝对精确,因为任何服装的领子通常是(设计)这件衣服式样的要点之一。

属类：行业术语-纺织服装-

Test Method for Determining the Focal Size of Iridium-192 Industrial Radiographic Sources

测定铱192工业射线源焦点尺寸的试验方法

属类：行业标准名称-国际标准-ANSI/ASTM E 1114-1996

Magnetic Resonance Imaging Tracking of SPIO-labeled Embryonic Neural Stem Cells Transplantation into Corpus Striatum of the Focal Cerebral Ischemia Rats and the Effects of Learning and Memory Abilities

超顺磁性氧化铁标记神经干细胞移植入局灶性脑缺血大鼠纹状体的MRI示踪及其对学习记忆的影响

属类：行业术语-中文论文标题-

Effect of Ligustrazine on Cell Proliferation in Subventricular Zone of Lateral Cerebral Ventricle after Adult Rat Suffering from Focal Cerebral Ischemia

川芎嗪对大鼠局灶性脑缺血后侧脑室室下区细胞增殖的作用

属类：行业术语-中文论文标题-

Dating from the late 15th century, it has long been a busy market area as well as a focal point in Russian history, the scene of executions, demonstrations, riots, and parades.

从15世纪后期起，它就是一个繁忙的市场和俄国历史的焦点，是处决死刑、抗议、暴动和游行的地点。

属类：工程技术-建筑-

Ever since the crusades, pilgrims had made the city a focal point of their travels

从十字军东征以后，朝圣者已使该城市成为他们旅行的一个集中点。

属类：综合句库--

At present, the focal point of supervision and inspection is to inspect and to put the audio-visual product and computer software market in order.

当前，监督检查工作的重点是清理整顿音像制品市场和计算机软件市场。

属类：法学专业-中国法律-国务院关于进一步加强知识产权保护工作的决定

The focal point of current economic work is to put the market in gear.

当前经济工作的重点是启动市场。

属类：综合句库--

At present, the Taiwan issue is still the most important and most sensitive focal problem in Sino-US relations

当然，台湾问题仍然是中美关系中最重要、最敏感的核心问题。

属类：综合句库--

secondary principal focal distance

第二主焦距,次焦距

属类：化学及生命科学-医学词汇-

Electrooptic variable focal length lens

电子光学变焦透镜

属类：综合句库-未分类-

Short focal length (high aperture)lens

短焦距(大孔径)透镜

属类：综合句库-未分类-

Detection of the X-ray Tube of Focal Poiets Five Newly-fixed x-ray Apparatuses

对5台新安装X射线机X射线管焦点的检测

属类：行业术语-中文论文标题-

A concave lens causes rays to diverge as though they are coming from a focal point.

发散透镜使光线分开，就好象从焦点上发出来的那样。

属类：自然科学-物理-

Diagnosis and Treatment Analysis of Liver Focal Nodular Hyperplasia

肝脏局灶性结节性增生的诊疗分析

属类：行业术语-中文论文标题-

F-number: The figures marked on the lens collar to indicate the size of the lens aperture in relation to its focal length.It is the ratio of the aperture diameter to the focal length of the lens.

光圈值:刻划在镜头上用来表示镜头孔径与焦距关系的比值。经过选择的数字成一系列。

属类：行业术语-印刷-

Fundamental standards for optics-Determination of focal length

光学基础标准.聚焦测定

属类：行业标准名称-国际标准-DIN 58189-1996

Wide-angle lens: Lens with wide covering power. It has a focal length which is less than the diagonal of the film format with which it is being used.

广角镜头:覆盖范围广阔的镜头.它的焦距长度短于所用菲林格式的对角线长度。

属类：行业术语-印刷-

The technical norms for measurement and test of characteristic parameters of infrared focal plane arrays

红外焦平面阵列特性参数测试技术规范

属类：行业标准名称-国家标准名-GB/T17444-1998