英文翻譯-人翻譯好的全分！機(jī)器翻譯的不要進(jìn)來，不會得分。

【專家解說】：老大，專業(yè)單詞都不給全就讓人家翻譯，COD就沒給 continuity of activated sludge organic (COD) 我還專門去查了這邊文章，好辛苦 AD=anaerobic digestion AD=厭氧消化（或無氧消化） ordinary heterotrophic organism= (OHO)普通異養(yǎng)生物（與autotroph相對） WAS= water activated sludge 水活污泥（廢水處理的一種方法） 3.2. Determining the unbiodegradable COD fraction of WAS from AD model通過AD模式確定WAS中的非生物降解的COD片段（或碎片之類的） For this the steady state AD model of So¨temann et al. (2005)was used due to its simple direct calculation procedure and equivalence to the complex dynamic simulation AD models for stable methanogenic digesters. 對于使用Sötemann et al的定態(tài)AD模版（模式）（Sötemann et al人名）是由于它簡便直接的計算步驟和等值于那用于穩(wěn)定的制甲烷沼氣池的復(fù)雜動態(tài)仿真AD模式（模版）This model is an extension of the McCarty (1974) steady state AD model and comprises 3 parts:此模版是對1974年McCarty模版的擴(kuò)充，包括3個部分： (1) a COD mass balance-based kinetic part from which the concentration of biodegradable particulate COD hydrolyzed, residual biodegradable COD, AD biomass and methane production are calculated, （1）一個以COD質(zhì)量平和為基礎(chǔ)的動力部分，此部分來自可生物降解的微粒COD水解，剩余可降解COD，AD的生物量和甲烷產(chǎn)量是可計算的(2) a stoichiometry part from which the AD biomass, methane gas, dissolved CO2 (HCO3 Alk), gaseous CO2 and saline ammonia (NH4 +) generated are calculated from C, H, O and N mass balances and the concentration and composition (X, Y, Z and A in CXHYOZNA) of the biodegradable COD (and influent VFA) digested, and （2）化學(xué)計量部分，通過C，H，O和N的質(zhì)量守恒，消化了的可生物降解COD的成分和濃度，來計算生成的AD的生物量，甲烷氣體，溶解的CO2，CO2氣體，和銨鹽(3) an inorganic C weak acid/base chemistry part from which the digester pH is calculated from the partial pressure of CO2 (pCO2 or CO2 mole fraction of the CH4 and CO2 gas stream) and H2CO3* alkalinity (closely equal to HCO3 concentration at pH 7–8). （3）無機(jī)的碳化合弱酸/堿部分，此部分來自通過二氧化碳的局部壓和碳酸根的堿度來計算的沼氣池）的PH值。Because C, H, O and N are conserved in the model, the influent organics concentration and composition completely define the AD outflow products, which in turn fix the digester pH.因為碳，氫，氧和氮的量是守恒的，所以通過流入（投入）的有機(jī)物的濃度和成分完全可以明確（得知）產(chǎn)出的產(chǎn)物，以此來確定沼氣池的PH。 whew, cheers 參考文獻(xiàn)：Biodegradability of activated sludge organics under anaerobi