circuit grade的用法和樣例：
例句
- The quality indicator of synthetic diamond obtained by adopting the purification process can reach grade demand.
採用該提純工藝得到的金剛石品質指標完全達到品級要求。 - Mancheng Han tombs excavated quantity, grade high heritage value and process high-value technology.
滿城漢墓出土文物數量多，品級高，文物科技價值和工藝價值高。
