帮忙翻译几个金融术语：co-sign,credit rating,credit evaluatiom,credit limit,net income,gross income

co-sign 联签 (多方共同签署)
credit rating 信贷分级
credit evaluation 信用评价
credit limit 信贷限额
net income 净收入
gross income 总收入

co-sign 联署,会签
credit rating 信贷分级
credit evaluation 信用评价
credit limit 信贷限额
net income 净收入
gross income 总收入

co-sign, 余弦
credit rating,信誉等级，信誉率
credit evaluation,信誉评价
credit limit,信誉限制
net income,净收入，纯利益
gross income，总收入，总收益