Optical invariant
[化] 光学不变量
🧩 词语组成解析
invariant
[in'vεəriənt]
adj. 无变化的，不变的;
n. 不变式，不变量;
🗣️ 情景例句
Have you ever been to Nanjing?
你曾去过南京吗？
Drop dead
晕倒
When I present my views on the competitive products, I will refer to the patent situation.
专利的情况会在说明竞争产品时一并提出。