chemical degradation

常见例句

High fluidity polypropylene is produced mainly by two methods, chemical degradation and new catalyst with hydrogen modulation.
高流动聚丙烯主要采用化学降解法和新型催化剂结合氢调的方法生产。
Solid bitumen from the Northeastern Sichuan Basin is investigated by the present authors using selective chemical degradation combined with various organic geochemical analyses.
采用选择性化学降解方法并结合多种有机地球化学测定手段对川东北固体沥青的成因进行研究。
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The formulation must be preserved against decomposition due to chemical degradation and protected from microbial contamination and the destructive influences of excessive heat, light, and moisture.
一张配方都对抗其因化学降解而导致的变质。以及防止它受到杂菌污染及过度的热量，光能，湿气导致的破坏性影响。