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1)  constant proportion
恒比
2)  constant reflux ratio
恒回流比
1.
Limiting concentration of light component in distillate of binary batch distillation under constant reflux ratio;
恒回流比二元间歇精馏轻组分的极限浓度
2.
Calculation of batch distillation of multi-components under constant reflux ratio;
恒回流比多组分间歇精馏计算
3.
It is derived that the varying manner of instantaneous constant composition region with batch distillation of a binary ideal mixture under constant reflux ratio and ideal operating condition is determined with the numeric of f(x_F)[Eq.
完善了采用恒回流比操作方法 ,在理想操作条件下间歇精馏二元理想混合物时 ,最小回流比的计算方法 。
3)  constant speed ratio
恒速比
1.
Based on the characteristics of stable gear transmission and constant speed ratio,a kind of imperfect gear mechanism was studied in this paper.
基于齿轮传动平稳和恒速比的特点,文中研究了一种不完全齿轮机构。
2.
This paper presents the high accurate constant speed ratio control system with microcomputer for the corrugated paper board production line and its cutter.
本文介绍应用微机控制瓦楞纸板生产线与横切装置的高精度恒速比控制系统。
4)  constant U/f
恒压频比
1.
Then considers the induction motor and the inverter as a whole controlled object,which named as a variable frequency speed-regulating system in constant U/f.
本文讨论了水泵变频调速的节能原理,提出一种基于参数自调整模糊PID控制的交流闭环变频调速系统的设计方法,把变频器和感应电机组成的变频调速系统看成一个整体—恒压频比变频调速系统。
5)  Ratio invariableness
比值恒定
6)  VVVF
恒压频比
1.
The traditional VVVF control schemes have the disadvantage of poor steady precision and the small output torque working in the low frequency ln this paper the scalar control scheme with the slip frequency compensation and the stator voltage dropping compensation is proposed,simulation and experiments validate the proposed scheme has good steady precision and high output torque.
传统的恒压频比控制存在稳态精度低、低频输出转矩小等缺点。
补充资料:恒比共聚物
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性质:又称恒比共聚物。在共聚合反应中,若两种单体竞聚率均为1(即两种单体分别与本身所成的自由基及另一单体所成自由基反应的几率相等)时,生成的共聚物组成与原料单体的组成总是相同的,称该共聚物为恒组分共聚物。这样的共聚合称为恒分共聚合。恒分共聚合中在任意比率的单体投料条件下,都得到组成与单体组成相同的共聚物。这类反应体系不多见。例如,偏二氯乙烯-甲基丙烯酸甲酯共聚体系。另外,当两种单体的竞聚率r1、r2均小于1时,存在恒组分共聚点(类似于二元汽液平衡组成图上的共沸点),此时第一种单体M1的摩尔分数f1可用下式求得:称为恒比组成,以恒比组成进行共聚合得到恒组分共聚物。恒组分共聚物概念可用于控制共聚物组成,即当目标共聚物组成接近或等于恒组分共聚物组成时,只需一次性投料就能得到组分恒定、均匀的共聚物,简便易行但适用范围有限。

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