日本三级无码啪啪区|午夜视频久久一区久久一|AAAAA一级黄片|日本久久99久久|国际精品AV在线|狠狠2015亚洲一区|美腿丝袜亚洲网站|欧美色多多人人看|国产超碰美女在线|www色色在线色

單詞乎

austenitic manganese steel

austenitic manganese steel是什么意思、austenitic manganese steel怎么讀

austenitic manganese steel漢語翻譯

【機(jī)】 沃斯田錳鋼

austenitic manganese steel英語解釋

名詞 austenitic manganese steel:

  1. a steel with a relatively large component (10-14%) of manganese; highly resistant to wear and shock
    同義詞：manganese steel
0
糾錯