The phase constitutions （） these ashes were investigated using X-ray diffraction._精华吧

The phase constitutions （） these ashes were investigated using X-ray diffraction.

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The phase constitutions （） these ashes were investigated using X-ray diffraction.

A.on

B.for

C.of

D.at

正确答案：of

Tag：研究生英语科技论文写作时间：2022-01-04 15:58:10

上一篇：The chemical compositions of the four ashes, obtained （） EDX data, are shown in Fig. 1.
下一篇：Transmittance spectra of the heat reflector were measured （） the wavelength range of 300 nm to 2000 nm at normal incidence.

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