expansion of credit meaning in English

信用扩张, 扩大信贷
信用膨胀

Their developments relate with their social economic relations , especially tightly relates with the constantly deepening of the credit relations . that is with the expansion of credit scales and with the complexity of credit relations together
它们的发展都与整个社会经济关系，特别是与信用关系的不断深化紧密相联，即与信用规模的扩大和信用关系的日益复杂同时发展。