相反，相对年龄是岩石、化石或矿物的近似年龄，是通过对有关的其他周围物质的年龄测定而得出的年龄。
Relative age, in contrast, is the approximate age of rocks, fossils or minerals made by determining the age of the material relative to other surrounding material.
康定杂岩以往被认为是扬子地块太古宇的基底，但近年来的同位素年龄测定结果表明其并不是形成于太古宙。
The complex was traditionally considered as the Archean basement of the Yangtze Block, but recent isotopic dating results indicate that it was not formed in Archean.
首先是采用BG 1999光释光谱仪选定激发光源，确定释放光子的频率，再用矿物的特征光释光谱作年龄测定。
The selected frequency optical luminescence dating (SFOLD) means that the characteristic frequency of the crystal is used to dating. Equipment BG1999 is created for optical luminescence.
因此，科学家设计了一个实验来测定这些分子的含量，这样就可以利用血样来推测某人的年龄。
So scientists devised a test to measure the molecules-and use that to infer someone's age based on his or her blood.
据此，科学家们设计了一种测试方法来检测分子，并利用它以某人的血液来推断其年龄，测定结果能精确到上下9年内。
So scientists devised a test to measure the molecules-and use that to infer someone's age based on his or her blood. The results appear to be accurate to within plus or minus nine years.
但是甲基化的发生模式会随着我们年龄的增加发生变化，这也就为通过测定甲基化确定人体年龄提供了可能。
But the patterns of methylation change as we grow older. Which was a clue that measuring methylation might give away age.
年龄较大的孩子还接受了为测定注意力集中水平而设计的上机测试。
The older children also sat a computerised test designed to measure attention span.
目的探讨年龄与组织多普勒显象测定的正常人左、右心室舒张功能之间的相关关系。
Objective to explore the correlation between age and left and right ventricular diastolic function indexes measured by tissue Doppler imaging in normal individuals.
不同的实验室正在对这些猛犸象骨骼进行放射性碳测定，以更加精确地得知这些化石的年龄。
Various labs are doing radiocarbon-dating of the bones to more precisely date them.
目的测定不同年龄正常儿童股骨颈颈前间隙的宽度，为儿童双侧髋关节疾病如双侧髋关节一过性滑膜炎的超声诊断提供正常参考值。
Objective To measure the width of space in front of the femoral neck at different age of normal children for diagnosis such as hip disease in children as bilateral transient synovitis of the hip.
性别和年龄与其它的环境和个人变量普遍联系，以致很难测定变动的真正来源。
Gender and age are generally linked with other situational and personal variables, making it difficult to determine specific sources of variation.
一种是测定相对年龄，通过与其他的样品的比较来确定待测样品的年龄。
Relative dating assesses the age of a specimen in comparison to other specimens.
运用结肠运输实验观察各年龄组结肠运输情况，采用放免法测定其餐前后血中nt的浓度。
Colon transit of every group was observed by colonic transit test Plasma nt concentrations were observed by radioimmunoassy (RIA).
测定分析鱼类生殖力、产卵期、繁殖群体的年龄结构及产卵类型。
The spawning times, absolute fecundities, age structures of breeding population, and spawning types of fish were also studied.
本文用放免法分别测定27日龄到61岁各年龄组男女性血清铁蛋白正常值。
The paper reports the normal value of serum ferritin in people aging from 27 days to 61 years old, measured by radioimmunoassay.
目的：通过序贯实验法测定不同年龄男性患者罗库溴铵气管插管的半数有效剂量（IED50），并探讨年龄因素对IED50的影响。
AIM:To determinate the median effective dose(IED50) of rocuronium via tracheal intubation in different ages male patients by sequential experimental method, and study the effect of the age to IED50.
采用外部生长线估算法测定淡水贝类年龄具有局限性，对年龄偏大或生长较慢的品种不适用。
The method of enumerating growth lines to determine the age of freshwater mussles has its limitation and not applicable to the older specimens and those species with slow growth.
方法大鼠按年龄分组，测定其胸腺质量及体质量大小，取血并测定各组血清中SOD、MDA含量。
Methods According to their ages, the rats were divided into three groups randomly. Thymus weight, thymus indices, SOD activity and MDA content were determined.
北佛罗里达大学的研究人员对72名年龄在18-59岁之间的男女进行了研究，他们让这些调查对象记住若干写满倒序数字的数列，从而测定他们的工作记忆力。
The University of North Florida researchers put 72 men and women aged between 18 and 59 through a test of working memory, in which they had to remember lists of numbers in reverse order.
三次计算都得到了非常相近的结果：所测定的月球年龄的平均数值约为4.36亿年。科学家们对此结果感到吃惊。
All three calculations resulted in very similar ages: an average of about 4.36 billion years, which surprised the scientists.
作者测定了4个河流冲击物的热释光年龄，用光晒退置零。
The TL ages of 4 fluvial deposit samples have been determined and the light bleaching is used in zeroing.
方法：采用骨密度测定对临床40例中、老年腰痛病人以及同年龄段健康人骨密度值进行对比分析。
Methods: the bone mineral density of 40 current elder patients with lumbar pain was determined and compared with the value obtained from healthy persons.
在缺乏新沉积层的基岩区研究断层新活动的时代，往往通过测定断层物质的年龄来进行。
The study of recent fault activity in bedrock area, where no young sediments can be observed, is often fulfilled through the study of fault zone materials.
火山岩层间夹合的化石层可使这种测定年龄的方法极为精确。
Fossils embedded in or between the volcanic layers can thus be dated by this method with great accuracy.
方法在PC兼容机上，应用运动觉测试软件，由微机控制，于VGA显示器产生棒状垂直视标，测定年龄11 ~ 68岁正常人56例(112只眼)的视觉运动觉。
Method MPs were tested for 56 cases (112 eyes) of normal subjects, their ages ranging form 11 years to 68 years, by using vertical moving bars generated on VGA monitor in a PC compatible computer.
应用离子探针shrimp测定锆石铀-铅年龄时，锆石选点至关重要，它将直接影响实验结果的可靠性和准确性。
When dating zircon U-Pb ages by SHRIMP, choosing the target points of zircon is very important as they directly affects the reliability and accuracy of the results.
方法采用光密度分析软件分别测定三叉神经痛患者以及健康人群全景片下颌体部标定区域内的光密度，按年龄、性别进行对比分析，观察两组骨密度的变化情况。
Methods The software of bone mineral density was used to detect both patients with trigeminal neuralgia and the normal subjects′ bone mineral density of the mandibular definite zone through DPT.
一种是测定相对年龄，通过与其他的样品的比较来确定待测样品的年龄。
Absolute dating involves assessing the actual age of a specimen by using some reliable measure to time.
提出I0的定值计算方法具有科学依据，可操作性强，为揭示海洋沉积地层相关关系和沉积年龄精确测定提供技术支撑。
The calculation method of I0 is of scientific foundation and accessibility and it can provide the exact sedimentation ages and explain the correlation of Marine sediment layers.
提出I0的定值计算方法具有科学依据，可操作性强，为揭示海洋沉积地层相关关系和沉积年龄精确测定提供技术支撑。
The calculation method of I0 is of scientific foundation and accessibility and it can provide the exact sedimentation ages and explain the correlation of Marine sediment layers.
应用推荐