某公司技术难题求解决：系统内有害杂质氟、氯、砷等元素的去除-北方有色网

基础金属	铜电解铜铜精矿铜管铜棒废铜铜排铜合金精铜杆再生铜杆铜板带铝铝土矿氧化铝电解铝铝辅料铝棒铝合金锭废铝铝杆铝型材铝板卷铝板铅铅精矿铅锭铅蓄电池再生精铅还原铅废铅蓄电池铅合金锌锌精矿电解锌锌合金氧化锌锌粉锡锡精矿锡锭锡材
小金属	钨钨精矿 APT(仲钨酸铵)钨粉碳化钨钨酸钠钨条钨铁钨材废钨钛钛精矿钛渣四氯化钛海绵钛钛金属钛白粉镁兰炭硅铁镁锭镁合金镁粉锗镓铟锑铋硒钽铌锆铪
新能源	锂锂矿锂化合物金属锂镍镍矿镍铁精炼镍镍盐高冰镍 MHP 钴电解钴钴粉氯化钴四氧化三钴硫酸钴钴中间品氧化钴碳酸钴钴酸锂锰锰矿电解锰电池级硫酸锰锂电池三元前驱体隔膜磷酸铁电解液正极材料电芯石油焦针状焦包覆沥青人造石墨硅碳负极硅氧负极硅硅石有机硅硅粉三氯氢硅工业硅再生硅光伏多晶硅硅片电池片组件组件成本指数海外组件废旧组件
其他金属	稀土稀土矿稀土氧化物稀土金属钕铁硼白银金

基础金属

铜电解铜铜精矿铜管铜棒废铜铜排铜合金精铜杆再生铜杆铜板带铝铝土矿氧化铝电解铝铝辅料铝棒铝合金锭废铝铝杆铝型材铝板卷铝板铅铅精矿铅锭铅蓄电池再生精铅还原铅废铅蓄电池铅合金锌锌精矿电解锌锌合金氧化锌锌粉锡锡精矿锡锭锡材

小金属

钨钨精矿 APT(仲钨酸铵)钨粉碳化钨钨酸钠钨条钨铁钨材废钨钛钛精矿钛渣四氯化钛海绵钛钛金属钛白粉镁兰炭硅铁镁锭镁合金镁粉锗镓铟锑铋硒钽铌锆铪

新能源

锂锂矿锂化合物金属锂镍镍矿镍铁精炼镍镍盐高冰镍 MHP 钴电解钴钴粉氯化钴四氧化三钴硫酸钴钴中间品氧化钴碳酸钴钴酸锂锰锰矿电解锰电池级硫酸锰 锂电池三元前驱体隔膜磷酸铁电解液正极材料电芯石油焦针状焦包覆沥青人造石墨硅碳负极硅氧负极硅硅石有机硅硅粉三氯氢硅工业硅再生硅光伏多晶硅硅片电池片组件组件成本指数海外组件废旧组件

其他金属

稀土稀土矿稀土氧化物稀土金属钕铁硼白银金

出售某公司技术难题求解决：系统内有害杂质氟、氯、

更新时间:2022-07-13 16:40:10 1139次查看

合作方式：

面议

达到指标：

面议

预期投入：

面议

截至日期：

2023-11-30

地　　区：

北京 - 北京

来　　源：

北方有色网

联系电话：

刘存利，13810377850 (联系时，请说在北方有色网看到)

基本文件流程错误 SQL 调试

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[ SQL ] SHOW COLUMNS FROM `tb_para` [ RunTime:0.002093s ]
[ SQL ] SELECT * FROM `tb_para` WHERE `id` = 1 LIMIT 1 [ RunTime:0.001400s ]
[ SQL ] SHOW COLUMNS FROM `tb_need` [ RunTime:0.001263s ]
[ SQL ] SELECT * FROM `tb_need` WHERE `id` = 317 LIMIT 1 [ RunTime:0.001051s ]
[ SQL ] UPDATE `tb_need` SET `hit`=`hit`+1 WHERE `id` = 317 [ RunTime:0.001208s ]
[ SQL ] SELECT * FROM `tb_need` WHERE `id` = 317 LIMIT 1 [ RunTime:0.001082s ]
[ SQL ] SHOW COLUMNS FROM `tb_category` [ RunTime:0.001231s ]
[ SQL ] SELECT * FROM `tb_category` WHERE `id` = 156 LIMIT 1 [ RunTime:0.000973s ]
[ SQL ] SELECT * FROM `tb_category` WHERE `id` = 32 LIMIT 1 [ RunTime:0.000909s ]
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[ SQL ] SELECT * FROM ( SELECT id FROM tb_need WHERE check_status = 1 AND category_id IN ( SELECT id FROM tb_category WHERE pid = 32 ) and submit_date >= DATE_SUB(NOW(), INTERVAL 12 MONTH) ORDER BY RAND() LIMIT 5 ) temp JOIN tb_need AS n ON temp.id = n.id [ RunTime:0.003666s ]
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[ SQL ] SELECT * FROM `tb_area` WHERE `id` = 3 LIMIT 1 [ RunTime:0.000932s ]
[ SQL ] SELECT * FROM `tb_advert` WHERE `id` = 171 LIMIT 1 [ RunTime:0.005679s ]

出售某公司技术难题求解决：系统内有害杂质氟、氯、

“某公司技术难题求解决：系统内有害杂质氟、氯、砷等元素的去除”详情描述

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出售某公司技术难题求解决：系统内有害杂质氟、氯、

“某公司技术难题求解决：系统内有害杂质氟、氯、砷等元素的去除”详情描述

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