对称

Based on a comprehensive study of drilling and log data, sequences of short-term base-level cycle of turbidite fan in Yanchang Formation of Triassic in Longdong area are divided into three basic structure types: up - deepening non - symmetry, up -shallowing non ?symmetry and symmetry ones according to recognition sign of the interface of the short - term base - level cycle.

以高分辨率层序地层学理论和技术方法为指导，以钻井、测井资料的综合研究为基础，运用短期基准面旋回界面的识别标志将陇东地区三叠系延长组浊积扇短期基准面旋回层序划分为向上"变深"非对称型、向上"变浅"非对称型和对称型3种基本结构类型。

In chapter 4, we compute the symmetry group, variational symmetry group, divergence symmetry group of some operator equation.

在第四章中计算了一些偏微分算子方程的对称群，变分对称群以及散度对称群。

The application of the method can also be extended for the textured materials with other sample symmetries in addition to orthorhombic symmetry.

所述方法可适用于任何晶体结构对称的织构材料及三维应力状态，并可推广至正交对称外的其他试样对称的织构材料。

According to the results of morphological, cytological and molecular identification, it was proved that cybrids were obtained from 7-0-8-4+66-3 fusion combination, and the petaloid cytoplasmic male st

论文对影响胡萝卜原生质体非对称融合的若干因子、组培茵的先期抽墓、利用非对称融合转移胡萝卜瓣化型雄性不育性的可行性、本研究存在的问题及改进方案以及非对称原生质体融合在胡萝卜资源创新中的应用价值等进行了讨论。

For larger-stiffness brick walls with pilaster,when increasing the quantity of GFRP to a certain degree,...

采用不对称加固，会导致墙体的裂缝开展不对称，从而使得墙体刚度不对称，墙体出现附加扭转，减弱GFRP对墙体抗弯承载能力的加固效果。

As for as the two-component WKI equation, symmetry reductions and similarity solutions which correspond to an optimal system of its Lie point symmetry groups are given systematically.

基于对称群理论，这一部分主要研究包括WKI系统在内的几个微分方程的对称及其在对称下的相似解。

The matrix equations for calculating primary and secondary phase voltage and phase current are deduced.

三相变压器的不对称现象通常是由外施电压的不对称或负载的不对称而引起的。

This will help the experiments to find the SUSY signal and to test these theories. We studied the radiation correction to the production and decay of some SUSY particles, investigated the phenomenology of R-parity violation SUSY models and established the R-parity violation event generator basing on PYTHIA package, and analysed the CP-violation effects induced by the model complex parameters.

我们具体分析了LHC上不同模型参数条件下超对称粒子的产生和衰变特性及其辐射修正效应；研究R-宇称不守恒下超对称模型现象学并完成了基于PYTHIA程序包的R宇称不守恒的事例产生程序；分析了某些物理过程中超对称模型复参数所引起的CP破坏效应。

Asymmetric hydrogenation of quinoline derivatives is a hot topic in asymmetric hydrogenation. However, some problems still remained.

芳香杂环化合物喹啉衍生物的不对称氢化一直是不对称氢化领域的一个热点，然而对于苄基取代喹啉和一些多取代的喹啉衍生物至今没有实现有效的不对称氢化。

In this dissertation, Ir-catalyzed asymmetric hydrogenation, asymmetric transfer hydrogenation and asymmetric hydrosilylation of quinoline derivatives have been studied.

本论文研究了铱催化喹啉衍生物的不对称氢化、不对称转移氢化和不对称硅氢化反应。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。