常見例句雙語例句Some batches of production showed that microstructure of nodular iron in investment casting can reach to 2 grade nodularization, 6 grade nodule size and 10% pearlite.經(jīng)批生產(chǎn)考核，精鑄球鐵鑄件的金相組織可達到球化級別2級，石墨球大小6級，珠光體含量10 %的要求。 返回 pearlite nodule