年龄鉴定

北海抹香鲸的年龄鉴定

Age Determination from Tooth of the Sperm Whale Collected in Qiongzhou Strait

黄鳝的年龄鉴定和生长

Age determination and growth of Monopterus albus

鳞片作为异鳔鳅鮀的年龄鉴定材料是可行和有效的。

Scales could be used for aging the fish efficiently .

来自同位素年龄鉴定的证据指出，绿岩带在年龄上彼此变化相当大。

Evidence from isotopic dating suggests that the greenstone belts vary considerably in age .

中国人肱骨的年龄鉴定

Age determination by humerus in Chinese

北京地区黑线仓鼠年龄鉴定及种群年龄组成的研究

Study on the division of age group and the age composition of population of Striped Hamster in Beijing area

天青石中硫、锶同位素值和海水硫、锶同位素值相近。来自同位素年龄鉴定的证据指出，绿岩带在年龄上彼此变化相当大。

Compositions of S and Sr isotopes for celestine are similar to those for general sea waters . Evidence from isotopic dating suggests that the greenstone belts vary considerably in age .

把理论值、推算值与实际值进行比较发现，推算值更接近异齿裂腹鱼的实际生长，表明年龄鉴定材料的生长与鱼体的生长关系密切；

According to the comparison of back-calculated value , theoretical value and measured value , we found that back-calculated value was closely to measured value , It was indicated that the growth of appraisal was closely with the growth of fish body ;

耳石微结构主要用于鱼类年龄鉴定，早期生长，产卵期、孵化期和产卵场的推导，早期生活史事件的研究，鱼类种群鉴别，早期死亡及年级补充量，生活环境条件的研究等。

Otoliths microstructure were mainly used in fish aging , early growth , estimating on spawning period , incubating period and spawn areas , evaluating on early life history events , identifying fish population , early mortality and class recruitment , habitation condition .

最后，Yu利用Grant推荐的技术建立了生物生长模型，这项技术可以使她根据皱襞的类型、精细程度、发达程度等迅速对年龄做出鉴定。

Finally , Yu modeled biological growth using a technique recommended by Grant that allowed her to identify the age at which each type of fold , coarse or fine , developed , and how quickly .

方法根据吴氏《人类骨骼测量方法》中规定的年龄估计及性别鉴定的标准，观测成人下颌骨的形态结构。

Methods According to the standard defined by Wu (《 The observing methods of human ′ s skeleton 》), 302 specimens of adults mandible were examined .

鲫耳石重量与年龄的关系及其在年龄鉴定中的作用

The relationship between otolith - weight and age with reference to its use in age determination for Carassius auratus

目的：观察国人肱骨大结节内骨小梁变化的年龄特征，为应用肱骨大结节内骨小梁的变化进行年龄鉴定提供依据。

Objective : To observe the morphological changes of the bone trabeculae with age in the greater tubercle of the humerus in Chinese .