If, however, either the product or the test materialchanges significantly over time, the instrumentation exercise will need to be repeated.
然而，如果产品或测试材料随着时间的推移变化很大，那么就需要重复实施装置。
2
Electrical charge flowing through a memristor changes the resistance state of the device, but actually observing the corresponding materialchanges has been a challenge.
通过忆阻器的电流可以改变它的电阻状态，但是在实际环境中观察随之而来的材料改变是一个挑战。
3
We will monitor compliance with this Order Execution Policy and review it at least annually. We will amend it as appropriate and will notify clients of any materialchanges.