求翻译：贷款评级分类模型是金融机构在美国货币监理署(OCC)最早开发的评级系统基础上拓展而来，OCC对贷款组合分为正常、关注、次级、可疑、损失等5类，并要求对不同的贷款提取不同比例的损失准备金以弥补贷款损失。是什么意思？

Loan rating classification model is to expand from financial institutions in the United States Comptroller of the Currency (occ) rating system based on the early development, occ loan portfolio is divided into normal, special mention, substandard, doubtful, loss of five categories, and require diffe

Credit rating classification model is the financial institutions in the United States currency (OCC), the earliest development of the rating system, based on the loans, OCC combination is classified as normal, with a focus, and secondary, suspicious, such as loss, category 5 and asked for the loan l

The loan rating classification model is the financial organ develops in the rating system foundation which American currency overseeing bureau (OCC) develops most early comes, OCC divides into, the attention normally to the loan combination, secondary, suspicious, the loss and so on 5 kinds, and req

Credit rating classification model is a financial institution in the United States Comptroller of the currency (OCC) development on the basis of the rating system and the development of the earliest, OCC loan portfolio is divided into normal, loss of attention, secondary, suspicious, 5 categories, e

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