在农业机械的性能研究和鉴定试验中，农机具的行进速度是一个十分重要的参数。
The traveling speed is a very important parameter in the performance research and identification experiment of agricultural machinery.
折射率是鉴定宝石的重要依据，折射率图式是确定宝石晶体光学参数必不可少的基本图件。
Refractive index is important to identify gems, and refractivity model is the basic graph for measuring gem crystal optic parameters.
建立了人体热调节系统数学模型，对飞机座舱温度生理鉴定参数进行了数值模拟。
A mathematical model of the human body thermal regulation system is established, and the physiological identification parameter of aircraft cabin temperature is numerically simulated.
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