More than 150 ton ball iron case to Shandong Huatai Group.
山东华泰集团球铁箱体合计150余吨；
The reaction of iron with sulfuric acid is a case of replacement.
铁和硫酸的反应是一种置换反应。
The hilt is made of entire iron. Is the barycenter on the case?
柄用全铁的，这把剑的重心是不是在格上了啊？
The hilt is made of entire iron. Is the barycenter on the case?
柄用全铁的，这把剑的重心是不是在格上了啊？
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