1)  positive and negative rotation
正、反转
1.
Desige Parameter and test date of the remoulded cylineer shaped screw impeller used by inducer was introduced, which fully reached positive and negative rotation performance and accorded with conversion law.
介绍了用诱导轮改造后的圆柱形螺旋叶轮的设计参数和试验数据 ,改造后的叶轮不仅能达到正、反转性能要求 ,而且基本符合相似换算定律。
2)  two direction whirl fashion
正反转
1.
The simulation result show that the impeller refining effect with two direction whirl fashion is better than impeller refining effect with unilateralism whirl fashion.
将模拟结果应用于生产现场试验表明,吹头正反转方式比吹头单向转方式对铝液的精炼效果更理想。
3)  forward/reversal rotation
正/反转
1.
Analysis of forward/reversal rotation transient process of rare earth permanent magnet brushless DC motor;
稀土永磁无刷直流电机的正/反转过渡过程分析
4)  modification of forward and backward rotation circuit
正反转改造
5)  Electric motor revolution and connter revolution
电机正反转
6)  positive inversion structures
正反转构造
1.
The study of the positive inversion structures in China offshore basins shows their good prospect for oil and gas exploration.
列举国内外正反转构造油气田实例,论述了正反转构造获得油气的主控因素。
2.
This paper presents the concept and identification characteristics of positive inversion structures.
本文简介正反转构造的概念和识别标志。
参考词条
补充资料：4-正庚基苯甲酸-4-正庚基苯酯
CAS：79606-06-7
中文名称：4-正庚基苯甲酸-4-正庚基苯酯
英文名称：4-n-Heptylphenyl 4-n-heptylbenzoate
说明：补充资料仅用于学习参考，请勿用于其它任何用途。