大神们，这段代码怎么解读

//
void Material::Process::CMaterialAdapterEngine::CalFuleRation()
{
LOG log("Material.Process.CMaterialAdapterEngine.CalFuleRation");
//找出数据库中上一次处理的最后一条记录
try
{
log.Debug()<<"计算燃料比开始"<<endl;
string strEndTime=m_ConfigurationDataAccess.GetFuleCalLastChargeClock();
if (strEndTime=="")
{
strEndTime=(CDateTime::Now().ToString()).substr(0,10)+"0000";
}
CDateTime cd(strEndTime);
cd=cd-3600*48;
string strNow=(CDateTime::Now().ToString()).substr(0,10)+"0000";
CDateTime cdNow(strNow);
cdNow=cdNow+3600;
strNow=cdNow.ToString();
int nCount=(cdNow.ToSec()-cd.ToSec())/3600;
int i=0;
log.Debug()<<"strEndTime:"<<strEndTime<<" strNow:"<<strNow<<endl;
while (i<nCount)
{

            CDateTime cdTemp=cd;
            CDateTime cdChargeEnd=cdTemp;
            CDateTime cdChargeBegin=cdTemp-3600;
            stFuleChargeInfo sFuleChargeInfo;
        try
        {

            GetFuleChargeInfo(cdChargeBegin.ToString(),cdChargeEnd.ToString(),sFuleChargeInfo);
            //将数据存入数据库
            m_ConfigurationDataAccess.SetFuleCalData(cdChargeBegin.ToString(),cdChargeEnd.ToString(),sFuleChargeInfo);
        }
        catch (...)
        {   

            log.Debug()<<"i:"<<i<<"time:"<<cdChargeBegin.ToString()<<"计算燃料比出错"<<endl;
        }
            cd=cd+3600;
            i++;

    }
    log.Debug()<<"计算燃料比结束"<<endl;

    string strEventName="hmi_ine_fur_cal";
    string strValue="0";
    iPlature::TAGVALUEMAP tagPairs;
    tagPairs.insert(TAGVALUEMAP::value_type(strEventName,strValue));
    Tag::GetInst().EventPut(tagPairs,strEventName,strValue);

}
catch (...)
{   
    log.Error()<<"计算燃料比出错"<<endl;
}

}
//

这不都有注释了么？再深入要看你的“燃料比”是个什么算法，这个你得问领域方面的人，而不是别的程序员