Acid number of upgrading heavy oil had little change.
改质稠油酸值几乎没有变化。
The granule surface of starch had little change after heat-moist treatment (HMT).
其中湿热处理前后淀粉的颗粒形貌变化较小。
The characterization of pre-curing catalyst show that the pore volume and specific surface area had little change after vulcanization.
预硫化催化剂的表征结果表明,催化剂硫化前后孔容和比表面积变化不大。
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