管制试样
Control sample
以上为机器翻译结果,长、整句建议使用 人工翻译 。
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.
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