相移波束器

仿真时出现错误，错误提示：不允许使用类 'phased.PhaseShiftBeamformer' 的对象组成数组和括号样式的编制索引功能。只能将类 'phased.PhaseShiftBeamformer' 的对象用作标量，或者用作元胞数组。请问这是什么意思？

[Rena Berman]

By google translate:

An error occurred during emulation. Error message: Objects of class 'phased.PhaseShiftBeamformer' are not allowed to form an array and parenthetical style indexing function. Only objects of class 'phased.PhaseShiftBeamformer' can be used as scalars or as arrays of cells. What does this mean?