chemical degradation

常見例句

High fluidity polypropylene is produced mainly by two methods, chemical degradation and new catalyst with hydrogen modulation.
高流動聚丙烯主要采用化學降解法和新型催化劑結合氫調(diào)的方法生產(chǎn)。
Solid bitumen from the Northeastern Sichuan Basin is investigated by the present authors using selective chemical degradation combined with various organic geochemical analyses.
采用選擇性化學降解方法并結合多種有機地球化學測定手段對川東北固體瀝青的成因進行研究。
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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.
一張配方都對抗其因化學降解而導致的變質(zhì)。以及防止它受到雜菌污染及過度的熱量，光能，濕氣導致的破壞性影響。