1650s in geometry, from Modern Latin parameter (1630s), from Greek para- "beside, subsidiary" (see para- (1)) + metron "measure" (see meter (n.2)).
A geometry term until 1920s when it yielded sense of "measurable factor which helps to define a particular system" (1927). Common modern meaning (influenced by perimeter) of "boundary, limit, characteristic factor" is from 1950s. Related: Parametric.
parameter 英文释义
1. a constant in the equation of a curve that can be varied to yield a family of similar curves
2. any factor that defines a system and determines (or limits) its performance
3. a quantity (such as the mean or variance) that characterizes a statistical population and that can be estimated by calculations from sample data
parameter 双语例句
1. It is the parameter of distribution.
这就是分布参数.
来自《简明英汉词典》
2. V $ PARAMETER displays information about the initialization parameters that are currently in effect for the session.
v$parameter动态性能视图显示了对当前会话起作用的初始化参数信息.
来自互联网
3. Three hundred acres of land is the parameter of our university, s expansion ( growth ).
