Spray Tin post processing 喷锡后处理
Tin ore pre-processing 锡矿石预选
processing of tin ores 锡矿石选矿
tin processing
锡处理
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The problem is that there was a previous plant there (processing material from the local tin ores) which left quite a bit of radioactive residue around the place.
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