1) convertible shovel
正反铲挖土机
2) positive and negative
正反
1.
As a rule of sentence-making in classical Chinese verse, antithesis has its philosophical basis,which is manifest in the principle of thorough connection and exquisite combination of "yin", "yang",positive and negative sides.
属对者造语之则也,推其本法一气贯通之理、阴阳正反之道,言其用则属辞类合之则、而遣字巧构之工也。
3) direct-reverse flotation
正-反浮选
1.
As the run-of-mine ore has a high MgO content and the minerals therein are finely disseminated,direct-reverse flotation process was employed,while new types of collectors called MG and SR were introduced for direct and reverse flotation,respectively.
针对该矿石性质,采用正-反浮选工艺,以新型药剂MG和SR分别作正、反浮选的捕收剂,取得了混合精矿P2O5品位32。
4) positive-negative flotation process
正-反浮选
1.
According to property of Yichang phosphorus ore,A positive-negative flotation process or a reverse flotation process was used for mid-low grade of phosphorus ore of Yichang mine.
根据矿石的性质,采用正-反浮选流程或单一反浮选选别宜昌磷矿,工艺合理,产品质量较好,是开发利用该磷矿的一种新途径。
5) positive feedback
正反馈
1.
Islanding detection method of positive feedback according to inverter;
基于逆变器的正反馈孤岛检测方法
2.
Global robot path planning based on positive feedback GA;
基于正反馈遗传算法的机器人全局路径规划
6) direct-reverse flotation
正反浮选
1.
The technical,ecnomical,and environmental analyses of the test results showed that direct-reverse flotation circuit was adapted to Yichang phosphate rock.
对宜昌丁东磷矿进行了浮选、重介质选矿及重介质选矿+浮选流程实验室小型试验,试验结果的技术、经济和环保分析表明:此矿宜采用正反浮选选矿方法及流程。
参考词条
补充资料：YJG-30型铲斗式装载机
YJG-30型铲斗式装载机
YJG 30型铲斗式装载机
说明：补充资料仅用于学习参考，请勿用于其它任何用途。