fullprof A complex variable has real and imaginary parts written in the form b(x) = n(x) + iv(x) for two real-valued functions n(x) and v(x)

单复变量包含实数和虚数两部分，针对两个实值函数n(x) 和v(x)的表达式为：b(x) = n(x) +iv(x)。

youdao

The two sealing machine hot and cold, stable, easy to tear cut incision can be divided into even, set variable speed, photoelectric tracking functions into one, easy to operate.

本机采用冷热两道封口，性能稳定，分切易撕切口、可分可连、集无级调速、光电跟踪等功能于一体，操作方便。

youdao

The two sealing machine hot and cold, stable, easy to tear cut incision can be divided into even, set variable speed, photoelectric tracking functions into one, easy to operate.

本机采用冷热两道封口，性能稳定，分切易撕切口、可分可连、集无级调速、光电跟踪等功能于一体，操作方便。

youdao