查询词典 during

Just under this background, studying on the flight mechanism of flapping-wing MAV and sample fabrication from the bionics are conducted in this dissertation. The kinematics equations of insect wings can be acquired by the observation and measurement on the natural insect in researching paper. The geometry model of insect is established by UG technology. The three dimensional grid during the insect moving in the flow field is achieved which adopted grid generation method. The characteristic of lift and drag are attained by simulation the surround flow field during the locomotion of wings, and the flight mechanism of insect is discussed. Based on this study, the physical flapping-wing MAV is fabricated by the acquirable materials and parts of apparatus in existence.

正是在这一背景下，本文从仿生的角度来研究微型飞行器的飞行机理与样机制作；通过查阅文献中对自然界中昆虫翅膀运动的观察与测量，获取了昆虫翅膀的运动方程；采用UG建模技术，建立昆虫的几何模型；采用网格划分方法，获取昆虫在流场运动时的三维网格；运用CFD方法模拟翅膀运动时周围的流场，获取昆虫运动时的升阻力特性，进而来研究昆虫的飞行机理；在此基础上，通过现有可用的材料加工制作仿生微型飞行器。

The recent studies on comparative genomics have further suggested that a third round of fish-specific genome duplication in ray-finned fishes might have occurred at about 350 million years ago, during the divergence between teleost fish and basal actinopterygian lineages. Therefore, FSGD might be related to the increase in species number and biological diversity during this time.

近期的系统基因组学研究资料进一步提出，在大约350百万年，辐鳍鱼还发生了第三次基因组复制，即鱼类特异的基因组复制(fish-specific genome duplication， FSGD)，且发生的时间正处在&物种极度丰富&的硬骨鱼谱系和&物种贫乏&的谱系出现分歧的时间点，表明FSGD与硬骨鱼物种和生物多样性的增加有关。

The call developmental process of Psittacula agapornis consists of five instinct phases according to its call character. In the first phase （congenital cal1 phase, CCP, 0~12 day of age）, the juveniles only produce single syllable with short syllable length. The second phase（blank-model-forming phase,BMFP, 13~30 day of age） is important for formation of vocal learning pathways. During this phase, the calls characterized by more and longer syllables. In the third phase （call-model-forming phase,CMFP, 31~45 day of age）, the call development is guided by a model system for vocal learning, vocal learning is engendered so that some calls with multi-syllables with UP1 are produced, principal frequency has increased about by 920 cent, the number of note is double that of second phase. The short-term memories are transformed into long-term memories in the forth phase （call-feedback-learning phase,CFLP, 46~90 day of age）. The call of juveniles is a close match to tutor call which accompanied by double various sounds with BS and UP1, and more resonance components were formed. Second principal frequency has increased about by 970 cent, the number of note increases by 2.6~3.0 times. During the fifth phase （excellent call phase,ECP, after 91 d）, vocal motor pathway is developed and the calls are accompanied with most stable, harmonious vari-tone and complex repertoire.

牡丹鹦鹉的鸣声发育分为5个时期。0~12 d为先天性鸣声期，鸣声特征为以基本音为主音的单音节单音调声，声长短。13~30 d为空白模板形成期，鸣声特征为以基本音为主音的多音节单音调声，声长和音量显著性增加，表明发声学习通路开始形成。31~45 d为鸣声模板形成期，鸣声特征为以第1陪音（UP1）为主音的多音节单变调声，声长和音量显著性增加，主音频提升约920音分，涵盖的律音数增加1倍，表明发声学习模板逐渐形成，发声学习开始。46~90 d为鸣声反馈学习期，鸣声特征为以BS和UP1为主音的双变调声，声长和音量显著性增加，主音频涵盖的律音数增加2.6~3.0倍，第2主音频提升约970音分，表明稳定模板逐渐形成，短期记忆逐渐向长期记忆转化。91 d后为完美鸣声期，鸣声特征为以UP1为主音的复合变音调声，声长、音量、主音频的提升和涵盖的律音数都趋于平稳，鸣声稳定而和谐，表明发声运动通路基本形成。

During the investigation of the reactivity of O_SCl_2(PPh_3)_2CH=C(PPh_3CHCH=CH_2 and O_SCl_2(PPh_3)_2CH=C(PPh_3C(=CH_2)CH=CH2, several stable osmacycles with novel structure, such as osmabenzenes, osmafurans, osmacycles containing intramolecular-coordinated allene, intramolecular-coordination osmacycles containing osmacarbene, an osmacyclopentadiene, were isolated during the investigation of the reactivity of O_SCl_2(PPh_3)_2CH=C(PPh_3CHCH=CH_2 and O_SCl_2(PPh_3)_2-CH=C(PPh_3C(=CH_2)CH=CH_2.In addition, some convenient and efficient methods to prepare these osmacycles were developed.

首先，合成出两种具有反应活性的金属杂五元环IC配合物OsCl_2(PPh_3)_2CH=C(PPh_3CHCH=CH_2和OsCl_2(PPh_3)_2CH=C(PPh_3C(=CH_2)-CH=CH_2，并对它们进行了系统表征；进而，研究了这些活性五元配合物的反应性，合成出多种稳定的锇杂环配合物，其中包括锇苯、锇呋喃、含配位联烯的锇杂IC环化合化物、含锇卡宾的IC环化物、首例锇杂环戊二烯化合物等多元化的产物。

Alular heart disease remained largely unchanged during the study, the researchers note, and there were ery few eents during follow-up.

研究者注意到：在研究中心脏瓣膜疾病大多没有变化，在随访中也几乎无不良事件。

The XRD results indicate that the iron oxides are transformed into metallic iron, most of the aluminiferous mineral and silicic mineral reacts with the sodium sulfate during the reduction roasting and forms sodium aluminosilicates, which enter into the nonmagnetic materials during the magnetic separation, then Al-Fe separation is realized.

XRD研究结果表明，在钠盐焙烧过程中，铁氧化物被还原成金属铁，大部分铝、硅矿物与硫酸钠反应生成非磁性物质铝硅酸钠，经磁选后进入非磁性物，从而实现铝铁的高效分离。

In this research, the spider silk from the major ampullate gland of native Nephila pilipes was collected via the forced-silking apparatus at the reeling speed of 3 m/min. The obtained silk was dissolved in hexafluoro-isopropanol. The influence of pH and temperature over the secondary structure of the silk protein in solution state was examined via Circular Dichroism. The effect of silk concentration and electrical field strength on the structure conformation of silk protein during film casting process was investigated via FT-IR. During the drying process, the increase of silk concentration and the presence of electric field tend to form β-sheet and β-turn. Finally, the dried film of silk protein was treated with different temperatures and cation solutions to study the post-treatment effects.

本研究所采用之蜘蛛丝蛋白质系取自本土品种人面蜘蛛之大囊壶腺体，以3 m/min之卷丝速度强迫取丝(forced-silking)收集蜘蛛丝，再将纤维溶於六氟异丙醇溶剂中配制成溶液，以圆二色光谱仪分析在不同 pH 值与温度条件下丝蛋白质在溶液中之二级结构变化，再将蜘蛛丝溶液以不同浓度及电场强度下乾燥成薄膜后，以傅立叶红外线光谱仪检测分析丝蛋白质在固体状态下之二级结构，最后以不同温度加温、离子溶液浸泡等条件对乾燥所得之薄膜进行后处理，并分析其二级结构之变化。

The analgetic effects,stage of labor,the blood lost during the first 2 hours after delivery,the application of mesotocin during the delivery course,blood gas analysis of parturient arteria radialis and the newborn umbilical venous blood,and the Apgar score of the infants were observed respectively.

观察两组产妇分娩镇痛的效果、各产程的时间、分娩过程中催产素使用情况、产后2 h失血量、产妇桡动脉血和新生儿脐静脉血血气分析及新生儿Apgar评分。

Now when the seventh week has come, that is, when two weeks, including the seventh, are left before Easter, everything is done on each day as in the weeks that ,are past, except that the vigils of the sixth weekday, which were kept in the Anastasis during the first six weeks, are, in the seventh week, kept in Sion, and with the same customs that obtained during the six weeks in the Anastasis.

当第七个星期来临时，就是复活节前二周，包含第七周，在这些天的所有事务都完成了，但也将成为过去，除了前六周期间在复活之地的星期六的守夜祈祷，第七周在熙雍山和复活之地举行相同的风俗仪式被保留以外，在这一天和这个地点，赞美诗在整个夜晚不断的轮唱。

Transrectal ultrasound guided prostatic nerve blockade is superior to the intrarectal lidocaine gel during transrectal prostate biopsy in anes thesia for routine administration in all patients during this procedure.

经直肠超声引导前列腺神经阻滞术的镇痛疗效明显优于直肠内灌注2%利多卡因凝胶，值得临床推广应用。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！