这句话中两个that后的从句是修饰哪个对象?

问题描述:

这句话中两个that后的从句是修饰哪个对象?
To produce equations that work with the new symmetry that describe the world accurately,an additional dimension of space is needed as well.

第一个that是equations的同位语从句修饰的是该词
第二个that是修饰的symmetry做定语从句的