
【医】 frontomental diameter
a specified number; brow; forehead; quantum
【医】 brow; forehead; frons; fronto-; metopium; metopo-
jaw
【医】 geny-; gnath-; gnatho-; jaw
diameter; directly; means; path; pathway
【医】 diameter
“额颌径”这一术语的具体含义尚不明确。从字面拆分来看:
“额”指人脸眉毛到发际线的部位,也可引申为物体上部的扁平结构(如匾额)或数量限定(如定额)。
“颌”通常指口腔上下部的骨骼结构(上颌骨与下颌骨),但当前搜索结果未提供相关解释。
“径”一般表示直线距离或测量值,常见于医学领域(如胎儿头围测量中的“双顶径”“枕额径”)。
推测“额颌径”可能是医学解剖学中某个部位的测量指标,例如:
由于当前搜索结果未提供直接依据,建议:
如需进一步分析,请补充相关语境或专业领域信息。
额颌径(英文名称:cephalic index)是指头颅的头围(额周长)与头长(枕骨至额部长度)之比,反映出头颅长宽比例。
额颌径的中文拼音为 é há jìng。
Cephalic index refers to the ratio of head circumference (perimeter of forehead) to head length (distance between the occipital bone and the forehead), which reflects the proportion of the length and width of the skull.
The pronunciation of cephalic index is /səˈfælɪk ˈɪndɛks/.
Cephalic index is often used in physical anthropology to classify different human populations by the shape of their skulls. It is also used in medical research to study the incidence of certain diseases in people with different head shapes.
For example, a study published in the International Journal of Clinical and Experimental Pathology found that there was a significant correlation between a high cephalic index and the incidence of intracranial hypertension in patients with cerebral venous sinus thrombosis. (例如,发表在《国际临床与实验病理学杂志》上的一项研究发现,高额颌径与患有脑静脉窦血栓形成的患者中颅内高压的发病率有显著相关性。)
Other terms that are used interchangeably with cephalic index include cranial index, cranial width index, and craniofacial index, all of which refer to the ratio of skull length to skull width. (与额颌径可以互换使用的其他术语包括颅指数、颅宽指数和颅面指数,都指的是头骨长度与头骨宽度的比率。)
There is no direct antonym for cephalic index in English, but it can be contrasted with other measures of skull shape, such as the height-to-length ratio or the height-to-width ratio. (在英语中,没有直接与额颌径相对的反义词,但是它可以与头盖骨形状的其他测量指标进行对比,例如高度与长度比或高度与宽度比。)
Cephalic index is a technical term used mainly in physical anthropology and medical research, and is not commonly used in everyday English.
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