查询词典 synthetic

In this paper, a speckle reduction method for Synthetic Aperture Radar images based on Dual Tree Complex Wavelet Transform is proposed, for the DTCWT has approximate shift-invariant and good directional selectivity.

利用双树复数小波变换(Dud Tree Complex Wavelet Transform， DTCWT)的近似平移不变性和多方向选择性，提出了一种基于DTCWT变换的SAR图像嗓声抑制方法。

This thesis focused on some synthetic organic reactions promoted by metallic dysprosium and dysprosium alkoxides. It consists of five chapters.

中文题名金属镝和烷氧基镝促进的有机化学反应研究副题名外文题名论文作者贾瑜导师陶凤岗教授学科专业有机化学研究领域\研究方向学位级别博士学位授予单位复旦大学学位授予日期2002 论文页码总数129页关键词有机化学反应有机合成镝烷氧基镝馆藏号BSLW /2003 /O627 /15 本论文主要研究了稀土金属镝和烷氧基镝参与的有机化学反应，共分五章。

Synthetic substance used as local treatment, elimination of ectoparasite or local anaesthesia

二作为局部治疗、外寄生虫驱除或局部麻醉用途之合成物质。

Two EDT monomer synthetic paths have been investigated.

主要研究内容包括：（1）EDT 单体合成路线的两种方案，以及具体的制备过程；

This paper study classical segmentation methods and put forward a kind of synthetic segmentation method based on fractal parameter, the secondary statistics eigenvector of gray value.

本文在经典分割方法的基础上，提出了基于灰度的二次统计特征量－分形参数的图像分割综合法。

In my opinion, both of electronic music and new media art would favor requirements of synthetic times.

在我看来无论是电子音乐还是新媒体艺术，都是要顺应合成时代这个特点需要的。

For spaceborne Synthetic Aperture Radar, Dopplcr property is one of the most important factors for azimuth performance. In this paper, the elliptic orbit is applied.

摘要在星载合成孔径雷达中，多普勒特性是决定雷达方位向性能的主要因素，对它的正确估计将影响到雷达的性能和最后成像的精度。

The result suggested that different genomes had different genetic speed or stability during evolution.3 The similarities co-efficiency between wild emmer and hexaploid synthetic was higher than that between wild emmer and common wheat. So that crossing among species is not a simple combination of genomes, but involve introgression of chromosomes, and the evolution made by this action was bigger than that made by environment.4 According to the results of salt tolerance identification, the salt tolerance of wild emmer is lower than that of common wheat in the whole.

野生二粒小麦与普通小麦之间的遗传相似系数稍高于野生二粒小麦与其与节节麦合成的双二倍体的遗传相似系数，说明物种之间的杂交并不仅仅是染色体组简单的合并，其中包括复杂的染色体组本身的一些特性以及染色体之间的互渗且这种作用远大于环境作用所引起的变化。

Your article is full of false promises; the creation of synthetic dental enamel had already been started 15 to 20 years ago.

你的文章充满了虚假的承诺，在建立综合牙釉质已经开始15至20年前。

Natural diamond and synthetic roby enameling dies are of the highest wear resistance. But tungsten carbide has the nice performance/price ratio.

上海金星公司天然钻石、红宝石涂漆模具有最高的耐磨性，但硬质合金涂漆模具有极好的价格性能比。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失