黑岱沟
- 网络HDG

黑岱沟
HDG
...氢呋喃和二硫化碳(CS2)/四氢呋喃混合溶剂对新疆黑岱沟(HDG)煤进行彻底萃取.在40 ℃和60 ℃下用30%双氧水溶液氧化得到 …
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The probing discuss about preventive maintenance of heavy-duty motor vehicles of Heidaigou Open-Cut Coal Mine
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