chemical degradation

基本解釋

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(xué)降解法和新型催化劑結(jié)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(xué)降解方法并結(jié)合多種有機地球化學(xué)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(xué)降解而導(dǎo)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(dǎo)致的破壞性影響。

化學(xué)降解
The main results are as follows:The removal pathway of polycyclic aromatic hydrocbarons in soil includes volatilization、biodegradation and abiotic degradation. Phenanthrene and pyrene in soil are based on microbial degradation, followed by abiotic degradation such as volatilization, chemical degradation.
土壤中菲和芘都是以微生物降解為主,其次是揮發(fā)、化學(xué)降解等非生物降解方式。
生物學(xué)
化學(xué)降解