然而，迄今为止，有关功能梯度材料的研究大都限于板状试样的制备，关于梯度复合管制备的报道较为少见。

However, most of the researches concerning FGM are preparation of tabular specimens so far, and little attention has been given to the preparation of gradient composite pipes.

youdao

然而，迄今为止，有关功能梯度材料的研究大都限于板状试样的制备，关于梯度复合管制备的报道较为少见。

However, most of the researches concerning FGM are preparation of tabular specimens so far, and little attention has been given to the preparation of gradient composite pipes.

youdao