European legislation governing the maximum permissible levels of various emissions has been tightened in several stages over the years. The percentage reduction figures refer to 1990 as base year. The figures for hydrocarbons (HC) and nitrogen oxides (NO
aFor themicrobial growth process, the kg value of ethyl acetate wasgreater than that of amyl acetate in the inlet concentrationrange of 100–400 ppm. The degree of inhib-itive effect wasalmost the same for ethyl acetate and amyl acetate in thisconcentration range. 为themicrobial成长过程,乙酸乙...
European legislation governing the maximum permissible levels of various emissions has been tightened in several stages over the years. The percentage reduction figures refer to 1990 as base year. The figures for hydrocarbons (HC) and nitrogen oxides (NO