retroactive effect

基本解释

The solution will apply after the entry into force of the agreement to be negotiated (no retroactive effect).
该解决方案在此协议产生法律效力后立即生效。
All references to the number of common shares and per common share amounts have been restated to give retroactive effect to the stock split for all periods presented.
全部参考这普通股的数量和每普通股数量被重新陈述适合提出的全部时期把追加效应给到析股那里。
If the retroactive effect is excluded, a special reservation shall be announced.
如果要排除这种溯及力，应该声明特别保留。

It not only supports deference to IRS regulations, but also giving them retroactive effect.
FORBES: More IRS 6 Year Audit Pushback
Because of the retroactive effect of the act and uncertainty about its scope, Judge Miller amended his decision in August 2009, allowing the workers to bring back the ADEA claim.
FORBES: Ledbetter Law Fails To Save El Paso Workers' Suit
In effect until December 31, 2011, the law is even retroactive for new aircraft purchased after September 8, 2010.
FORBES: Turbulence For Corporate Aircraft Tax Break

溯及力
It is an obvious tendency that the rescissions have no retroactive effect.
解除无溯及力是一个明显的发展趋势。
追溯效力