The FHA went further than the HOLC; they demanded that mortgages be twenty years and also self-amortizing.

联邦住宅管理局比房主贷款公司更进一步,他们约定抵押贷款,可以在20年内进行分期偿还

耶鲁公开课 - 金融市场课程节选

They demanded that the mortgages be self-amortizing -this is what came in in 1933.

他们希望抵押贷款能够分期偿还,1933年这个要求得以实现

耶鲁公开课 - 金融市场课程节选