常見例句雙語(yǔ)例句The deactivation of hydrogenation catalyst of 3 - hydroxy propionic aldehyde was studied.對(duì)3- 羥基丙醛加氫催化劑的失活原因進(jìn)行了研究。PVA was partly modified with aldehyde by way of hydroxy-protected in the following experiments.本研究採(cǎi)用羥基保護(hù)的方法，對(duì)PVA材料進(jìn)行部分縮乙醛化初步改性； 返回 hydroxyaldehyde