theory n. 1.理论,学理,原理。 2.学说,论说 (opp. hypothesis)。 3.推测,揣度。 4.〔口语〕见解,意见。 the theory of two points 两点论。 Darwin's theory of evolution 达尔文的进化论。 theory of equations 【数学】方程论。 theory of everything 【物理学】(把相对论、量子论和宇宙大爆炸理论都包括在内的)万用理论。 theory of relativity 【物理学】相对论。 the atomic theory 原子说。 Our scheme is good both in theory and in practice. 我们的方案在理论上和实施上都是好的。 combine [separate] theory with [from] practice 理论结合[脱离]实际。 My theory is that we must bring new blood into the Institute through appointment of younger men to important positions. 我的意见是我们学院应该通过重用年轻一些的人来注入新的血液。 theory of games 博弈论,对策论,权衡利弊得失的形势分析。
Different from the scattering theory used in the derivation of conventional generalized screen propagator , in this paper , a high order formula of generalized screen propagator for one - way wave equation is proposed by using the asymptotic expansion of single - square - root operator 摘要不同于常规广义屏传播算子的推导中使用散射理论,本文利用单平方根算子的渐近展开,推导出了单程波方程广义屏传播算子的高阶表达式。
After that , using the simulated annealing optimizing method , the structure parameters were optimized and good results were gained . finally , the scattering theory of d . stearns , which is applible to soft x - ray region , is applied to the scattering study of rough interface of soft x ray multilayer mirrors 之后将适用于软x射线波段的d . stearns的散射理论应用于软x射线多层膜反射镜的粗糙界面的散射研究,并基于该理论提出了一种多层膜反射镜的修改设计方法。
In qcd description , pp elastic scattering is a gluon exchange process . in the other words , pp elastic scattering is a high energy multiple scattering of two quark - composite system . therefore , one can describe proton - proton elastic scattering by quark multiple scattering theory , such as glauber theory , although this mechanism cannot have vacuum quantum numbers requested by experiments 一方面我们可以认为质子?质子弹性散射是一个胶子交换过程,另一方面我们也可认为质子?质子弹性散射是两个夸克复合系统的多重散射过程,因此我们可以用夸克的多重散射理论,如glauber理论来描述质子?质子的弹性散射过程,虽然,这种机制不可能具有实验所要求的真空量子数。
Through numerous experiment and analysis of scattering characteristic about fat and protein in milk , we find their characteristic about fat and protein in milk , we find their scattering law and establish the correlative scattering model of fat and protein in milk . especially , we adopt surface fitting to break through this problem from theory and technology , without isolating protein from milk , we can directly measure the protein in milk , that is to say , completely realizing the quickly accurate measurement of protein in milk . furthermore , we bring prosperity for the field of measuring multi - ingredient in milk through light scattering theory 经过大量实验和对牛乳脂肪蛋白质的散射特性分析,我们找到了他们的散射规律,并建立了牛乳脂肪和蛋白质的关联散射模型,并采用多元线性回归的曲面拟合法彻底突破了这一难关,无需把蛋白质从牛乳中分离出来,可直接对牛乳这一复合体中的蛋白质进行测量,完全实现了快速而准确的牛乳蛋白质测试,为利用光散射原理同时测量牛乳多成份这一研究领域开辟了光明而广阔的前途。
When various diameter particles are irradiated by a collimated laser light beam , light scattering phenomenon takes place , and the scattering light parameter include the information of the particles size distribution . mie scattering theory is the fundamental principle of the particle size measuring instruments and its computations are complicate 微型化雾粒粒径分布测量仪的测量原理是米氏光散射理论,当不同粒径的颗粒被平行激光束照射后,发生光散射现象,散射光的参数包含有被测颗粒粒径的信息,但其数值计算量大且复杂。
Then , the method of measuring hrtf by mit and cipic laboratory is briefly reviewed . after that , by using sound wave scatter theory and rigid sphere model of head , a simple method for calculation hrtf is proposed . and validating that method through psychoacoustics experiment , and matching database for realizing individual hrtf 然后简述了麻省理工学院和cipic实验室测量hrtf的方法,通过声波的散射理论以及利用人头模型提出一种简化的理论计算对头部尺寸对声音定位的影响进行了理论分析,并且利用心理学测试验证利用匹配数据库实现hrtf的个性化。
To study blue - green laser light scattering and polarization status changes in the ocean , is used to resolve the relative problem of optical communication , detection and imaging under water . in the paper , sea water characteristic of absorption and scatter - ing , and intrinsic optical character and extrinsic optical character of sea water are summed up ; the scattering theories of sea water , including rayleigh scattering , mie scattering by spherical particles and polarization theories of mie scattering , are described in detail 研究蓝绿激光在海水中的散射特性以及由散射引起的退偏现象,是为了解决水下通信、探测、成像的相关问题。本文综述了海水对光的吸收、散射特性以及海水的内在光学性质和外在光学性质;详细介绍了海水的散射理论,包括瑞利散射、 mie散射以及mie散射的偏振理论。
The extracted height - height correlation function and the random surface parameters obtained ever since conform with those obtained by the measurement of afm in chaper 3 , based on the light scattering theory of kirchoff approximation , we propose the method for the extraction of surfaces parameters from the correlation functions of speckles intensity produced by light scattering in the region near the random surfaces 我们以对三个高斯相关的随机表面样品的实验测量为例,对该方法行了验证。所测得的结果与用原子力显微镜测量的结果符合得很好。第三章根据基尔霍夫近似下的光散射理论,提出了从随机表面附近衍射区内的散斑场相关函数中提取随机表面参量的方法。
The main works and results are as follows : 1 . by use of one order multiple scattering theory , light scattering and reflection by a single coating layer is analyzed . the variance of radiation intensity , bidirectional reflection distribution function ( brdf ) and laser radar scattering cross section with coating layer parameters is given , with the effect of rough contrast on bidirectional reflection distribution function 本文主要研究了单层和多层涂层结构介质的光散射特性,以及近场条件下复杂目标对激光波束的散射,其主要工作如下: 1 、采用一阶多重散射近似理论分析单层涂层对光波的散射和反射,计算并讨论了辐射强度、双向反射分布函数和单位面积激光雷达散射截面随涂层结构参数的变化规律,数值分析了粗糙基底对双向反射分布函数的影响。
In the last forty years the research for finding solitary wave solutions has been experienced a great growth and some sucessful methods including the inverse scattering theory , backland transform , hirota ' s bilinear methods and the homogeneous balance method have been presented in succession 近四十年来非线性演化方程孤波解的解法研究蓬勃发展,相继诞生了一些比较成功的求解方法,如反散射方法、 b ( ? ) ckland变换方法、 hirota方法以及齐次平衡方法等,这些方法多年来得到了广泛的发展和应用。