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老年人口系数
释义
老年人口系数
Encyclopedia
医学
老年流行病学
释
coefficient of aged population
老年人口系数
老年人口在某个国家或某个地区的总人口构成中所占的比例。又称老年人口比例。
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high purity niobium
high purity precious metal materials
high purity reagent
high purity signal generator
high purity tantalum
high purity tungsten
high purity zinc reference electrode
high-Q mode
high quality aggregate
High-quality development of the cultural industry
high rate direct sequence spread spectrum
high rate direct sequence spread spectrum, HR-DSSS
high rate discharge ability
high redshift
High-redshift galaxies
high-redshift galaxy
high-reflecting coating
high-reflecting film
high-reflection coating
high refractive index polymer
high-resistance alloy
high-resistivity alloy
high resolution
high resolution airborne magnetic survey
high resolution continuum source atomic absorption spectrometer
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