无损的

For instance, in the direct 3-D CT image reconstruction, the calculating scale, the calculating complexity and freedom of parameters go far beyond the processing capability of array processor used in 2-D medical CT.

七十年代以来，CT技术已经有了长足的发展，医用CT的成功和普及以及工业CT技术的进展使无损检测手段发生了划时代的变化，开创了现代辐射成象技术的新阶段。

For the first time, we propose the Ternary production rule and Ternary rule matrix , then use MVL to decompose the compound rules, which both realize lossless decomposition of the 4〓 type of compound rule and avoid rule matrix's dimension increase for introducing new proposition to substitute the compound recondition.

首次提出并使用三值产生式规则及三值规则矩阵，创造性的将多值逻辑用于复合产生式规则分解，很好地实现了4类复合规则的无损分解，同时避免了该类复合规则的出现需引入新的命题而导致规则矩阵规模增大的问题。

Then, the necessary conditions for testing non-redundancy and predigestion and the analysis of loseless decomposability are discussed.

给出了与或图数据库的定义、规范化理论、无冗余和既约化理论，证明了它与关系数据库的等价性；然后给出了依赖集存在冗余和既约的必要条件，讨论了无损分解在与或图形式下的特性，从而形成了与或图数据库关系模式分解的规范化算法。

To research the propagation characteristics of travelling wave along transmission line in depth, the authors establish a mathematical model of travelling wave along lossless transmission line with the format of discrete time and space mesh lines, derive the stable condition and boundary condition of the wave equations using numerical solution of partial differential equation, and attempt the simplification of the boundary condition to realize full decoupling of voltage and current.

为深入研究行波在配电线路上的传播特性，建立了时间-空间网格线离散格式的无损传输线行波数学模型，采用偏微分方程的数值解法推导了波动方程的稳定条件和边界条件，并尝试对边界条件进行简化，以实现电压和电流的完全解耦。

Modulus of elasticities of five kinds of wood members including purlin on the ridge of the roof, square purlin, round purlin, beam, sprocket from Grand Hall of Golden tile, Kumbum Monastery located in Qinghai Province were measured by using stress wave method.

采用应力波测定仪FAKOPP对塔尔寺大金瓦殿的脊檩、檩、梁、承椽檩、房椽等五种木构件的动弹性模量进行了测定，结果表明应力波无损检测可以有效的测定残余木构件的力学强度，不同种类木构件弹性模量保持率与其承重作用大小相关。

According to the edge detection theory based on modulus maxima of wavelet transform, an infinitely differentiable wavelet with good antisymmetry was deduced to extract the edges of defects from X ray spot weld inspection images.

基于小波模极大值边缘检测原理，推导出一类具有良好反对称性的无限光滑小波并运用于点焊缺陷的边缘提取。实验表明，该方法能有效地提取缺陷边缘，并能获得较好的效果，从而为小波理论在工业 X射线无损检测中的应用作了初步探

Qualifications:l Qualified as marine- or mechanical engineer, with 2~4 year experience on Casting or welding or machining is preferred;l Basic knowledge is needed on material test, Non-defective test, hardness test; etcl Skilled on component's dimensions/Geometry tolerance measuring;l Sound knowledge of MAN's Four-stroke engines and/or Two-str..

资格要求：l 船用或机械工程师，在铸造、机加工或焊接方面拥有2～4年的工作经验； l 对材料分析、无损探伤和硬度试验等方面掌握了一定的知识；l 能熟练地测量零件的尺寸和型位公差； l 对于MAN的四冲程和/或二冲程柴油机有所了解； l 对于工厂设备有所经验为佳。

It can be used in studying the calcium dynamics, in addition it\'s applicable for real-time, less damage and long-playing observation. It might be important to study calcium of spine with stimulations of neurotransmitter and action potential.

结果表明，利用Cameleon 的FRET 比值变化来定量监测树突棘钙动力学的方法是切实可行的，并可以进行实时、无损、长时间的监测，为研究神经递质、动作电位等刺激对树突棘内钙信号影响提供一种重要研究手段。

They can be widely used in the following industries:aviation. Aerospace, soldierwork, railroad, metallurgy, the automobile manu_facturing,I.C. engine,shipbuilding ect,especially used for theaccessory made of the magnetic material, such as axletree, shafts of different sizes,pole,crank, impeller,lamina,anchor man chain gear,standard pieces and valve ect,Asto the crack,pucker,loosing such surtace defects caused by the reason of raw materials or heat treatment ,sealing,founding,forging and pressing, tiredness, quenching, milling and paring, our products can detect them without any loss.

产品广泛应用于航空、航天、军工、铁路、冶金、汽车制造、内燃机、造船业、弹簧、压力容器、石化、桥梁、油田、机械制造等行业，如锻压件、轴承、大小轴类、连杆、曲轴，叶轮，叶片，锚链、齿轮、标准件、阀门等铁磁性材料制成的零件，因原材料的原因或者热处理、焊接、铸造、锻压、疲劳、淬火、磨削而引起的裂纹、夹渣、折叠、疏松等表面缺陷的无损检测。

There was still hope, they said, if the Fuehrer retired to the south, where Field Marshal Ferdinand Schoerner's army group in czechoslovakia and considerable forces of Kesselring were still intact

他们说，如果元首退到南方去，还是有希望的，因为在南方，斐迪南·舒埃纳尔元帅在捷克斯洛伐克的集团军群和凯塞林所率领的相当大量的军队仍然完整无损。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。