long period variable的例句大全

V 879 SCO is a long period variable star

V879Sco是一颗长周期变星

secular trend is the value of the variable that tends to increase or decrease over a long period of time.

长期趋势指的是在一个长时期内趋向增加或减少的变量的值。4.Secular trend is the value of the variable tends to increase or decrease over a long period of time.长期趋势是指变量的值在一个长时期内所呈现的增加或减少的趋势。