the scientific measurement of light in terms of its intensity, color, and other properties

光度测量, 光度学
an instrument used to measure and indicate the altitude of an object above a fixed level, typically the Earth's surface

高度计, 高程仪
a device used to measure the speed and direction of the wind

风速计, 风向计
the unit of electric current, symbolized as "A" in the International System of Units (SI)

安培, 安培数
a scientific instrument used to measure air pressure

气压计, 气压仪
the measurement of land elevation variations comparing to sea level or a chosen reference point

地形测量, 高程测量
the measurement and analysis of water flow, levels, and properties in natural bodies of water and hydraulic systems

水文测量, 水文计算
the measurement and analysis of the spectrum of electromagnetic radiation emitted or absorbed by substances

光谱测量, 光谱分析
a device used to measure the electric potential difference between two points in an electrical circuit

电压表, 伏特计
a device used to measure the pressure of gases or liquids in a closed system, typically by comparing it to atmospheric pressure

压力计, 测压仪
the scientific study of measurement, including the development of measurement standards and techniques

计量学, 测量学
the scientific measurement of heat exchange in chemical or physical processes

热量测定法, 热量计量
the measurement of variations in gravitational fields to understand the Earth's structure and properties

重力测量, 引力测量
a measure of the brightness of a light source as perceived by the human eye

光度单位, 亮度单位
the process of measuring how dense something is by assessing how much light it absorbs or transmits

密度测量法, 密度测定法
