English
全部
搜索
图片
视频
地图
资讯
更多
购物
航班
旅游
笔记本
Top stories
Sports
U.S.
Local
World
Science
Technology
Entertainment
Business
More
Politics
时间不限
过去 1 小时
过去 24 小时
过去 7 天
过去 30 天
最佳匹配
最新
1 天
被低估的“伴生矿”:铜矿里含有的钼、金、银、铼,可能比铜本身 ...
一个直观的对比:假设一座矿山年产铜金属30万吨,其伴生金品位为0.5克/吨。若金回收率从50%提升至70%,意味着每年可多回收数十公斤黄金,价值增量显著。对于铼而言,哪怕只回收几个百分点,其价值贡献都不可小觑。
一些您可能无法访问的结果已被隐去。
显示无法访问的结果
今日热点
Minneapolis ICE shooting
Authorities confirm suicide
FL Rep. Frost assaulted
Josh Hoey breaks world record
Pushes for social media ban
Steelers hire head coach
End reelection campaign
Today in history: 1947
Climbs Taipei 101 skyscraper
Seeks Minnesota voter rolls
DTW terminal crash
FBI agent resigns in MN
Texas QB undergoes surgery
Wins ninth slalom title
Plans to create ‘British FBI’
US carries out 35th strike
Accuses Ole Miss of tampering
Trump praises UK troops
Dr. William Foege dies at 89
Last pandas to leave Japan
Security deal ready to sign
SEC drops Gemini case
Former South Korean PM dies
Wienie 500 is back at IMS
Libya signs 25-year oil deal
Pulls out of Australian Open
Packers’ Walker arrested
Toyota recalls 162,000 trucks
Top general under probe
NBA postpones game
Indonesia landslide
Dems vow to block DHS funding
Postpones Minneapolis game
反馈