... 涸深度 drying soundings 干式银盘像纸 dry-silver paper 双层公路 dual type highway ...
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dry silver paper 干式银盐感光纸
dry silver paperdry-silver paper 干式银盐照相纸
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This paper describes the experiment of producing ethylene oxide (EO) by using ethylene recovered from catalytic cracking dry gas in the presence of ys silver catalyst.
叙述了在YS型银催化剂作用下，利用催化裂化于气回收的乙烯制备环氧乙烷的实验研究。
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