研究四元数矩阵的主谱、协谱和奇异谱的性质。
The main spectrums, singular spectrums and cospectrums of matrices over quaternionic sfield are studied.
本文主要研究四元数射影空间中的特殊曲面-极小曲面。
Minimal surfaces is the surface whose average curvature is zero.
目的研究四态叠加多模泛函叠加态光场的高次振幅压缩特性。
Aim To study the higher-power amplitude squeezing properties of the four-state superposition multimode functional superposition state light field.
目的：研究四氢帕马汀对大鼠海马缺血再灌注损伤的保护作用。
Objective: To study the protective effects of tetrahydropalmatine against ischemia-reperfusion induced hippocamp lesion in rats.
四相输电系统的故障分析，是研究四相输电理论的一项重要内容。
Four-phase transmission system fault analysis is one of the important studies on four-phase transmission system theory.
克拉克是英国剑桥大学的科学博士与脊椎动物古生物学的高级讲师，研究四足动物起源已超过25年。
JENNIFER A. CLACK, a Reader in vertebrate paleontology and doctor of science at the University of Cambridge, has been studying tetrapod origins for 25 years.
采用盆栽试验，通过观察叶片和枝条的生长状况，测定生长期内生物量的增加情况，研究四翅滨藜在不同含盐土壤中的生长状况。
Through observation of leaf and branch growth in pot experiment, biomass increase during growth period was tested to study the growth situation of Atriplex canescenes in various salt level soils.
在研究四波耦合时，分别讨论了在三种BSO晶体切面上，信号光和向前泵浦光的的偏偏振振态态互相平行和存在夹角时相位共轭反射率的特性；
Studying four-wave mixing, we get the phase-conjugate reflectivity in three cut planes in BSO when the polarization of signal beam and pump beam are parallel or not parallel.
出于这个原因，嫦娥四号将研究太阳风对月球表面的影响，以及航天器发现的任何矿物。
For this reason, Chang'e 4 will study the effect of solar winds on the lunar surface and any mineral found by the spacecraft.
事实上，在皮尤研究中心（Pew Research）四代人的数据中，千禧一代并没有将职业道德作为其独特之处。
In fact, of the four generations Pew Research has data for, the Millennial generation does not cite work ethic as distinctive of itself.
研究表明，如果给定15分钟的自由玩耍时间，四到五岁的孩子会将其中三分之一的时间花在有关空间、数学和建筑的活动上。
Research shows that given 15 minutes of free play, four- and five-year-olds will spend a third of this time engaged in spatial, mathematical, and architectural activities.
在一项描述该技术的研究中，研究人员让100名志愿者用智能键盘输入四次“touch”这个单词。
In a study describing the technology, the researchers had 100 volunteers type the word "touch" four times using the smart keyboard.
研究发现，四到八年级的优秀教师以一种可以持续数十年的方式提高了学生们的技能。
The study found that strong teachers in the fourth through eighth grades raised the skills of their students in ways that would last for decades.
在研究中，402名来自纽约四所低收入地区高中的9年级和10年级的学生被分为三组。
In the study, 402 9th- and 10th-grade students from four New York City high schools in low-income areas were divided into three groups.
研究人员组织了一个实验锦标赛，有四支青年团队参加。
The researcher organized an experimental tournament involving four youth teams.
欧洲的研究人员研究了源于四个物种的493只蝙蝠。
The European researchers studied 493 bats from four bat species.
我仍然记得我四年级做的社会研究项目。
战略与国际研究中心表示，包括我们自己在内，我们用来移动事物的能量中，约有四分之三的能量没有产生有用功。
According to the Center for Strategic and International Studies, about three quarters of the energy we use to move things, including ourselves, accomplishes no useful work.
根据战略与国际研究中心的数据，我们用于移动包括我们自己的物体的能量中，约有四分之三没有完成任何有用的工作。
According to the Centre for Strategic and International Studies, about three quarters of energy we use to move things, including ourselves, accomplish no useful work.
皮尤研究中心此前的一项分析预测，当今年轻人中可能有多达四分之一的人这辈子都不会结婚。
A previous Pew Research Center analysis projected that as many as one-in-four of today's young adult may never marry.
研究人员调查了四种严重的身体疾病是如何影响婚姻的。
The researchers examined how the onset of four serious physical illnesses affected marriages.
为了验证这一假设，研究人员将处于第四和第五阶段发育期的幼年龙虾放在能够操纵牡蛎片的实验室环境中饲养。
To test this hypothesis, researchers raised lobsters in the juvenile fourth and fifth stages of development in a laboratory environment in which the lobsters could manipulate oyster chips.
只有四分之一的参与者拥有研究人员所称的“幸福感优势”——也就是说，他们（生活）的意义感超过了他们（生活）的幸福感。
Only one quarter of the study participants had what the researchers call "eudaemonic predominance"—that is, their sense of meaning outpaced their feelings of happiness.
研究人员在《公众对科学的理解》杂志上发表报道称，那些实现了目标的人有四个显著特征。
Four traits stood out for those that achieved their goals, the researchers report in Public Understanding of Science.
在一项研究中，施瓦茨观察了大四学生的决策过程。
In a study, Schwartz observed decision-making among college students during their senior year.
该研究将菜谱定义为包含四种或四种以上配料的主菜。
The research defined a recipe as a main course dish containing four or more ingredients.
那些在研究开始后一个月内就开始吸烟的人在研究结束时抑郁的可能性是那些没有开始吸烟的人的四倍。
Those who began smoking within a month of the study's start were four times as likely to be depressed at the study's end than those who did not begin smoking.
研究人员认为，如果蜜蜂消失了，人类就只能存活四年。
Researchers suggest that humans would only survive for four years if the bees disappeared.
研究人员让他们识别四种乐器，然后说出他们最喜欢和最不喜欢演奏的乐器。
They asked them to identify 4 musical instruments and then to say which they would like to play most and which they would least like to play.
研究发现，城市树木的碳循环速度和生长速度几乎是乡村树木的四倍。
It was discovered that rates of carbon cycling and growth rates among city trees were nearly four times faster than those in the countryside.
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