转速

The necessity of research on variable-speed control hydrostatic system and the markets requirement of hydraulic elevator are pointed out.

第二章，分析了闭式油路变转速液压电梯系统的稳定性，提出适合该系统的速度控制策略。

Severe vibrations of hydroturbine units had occurred in some hydropower plants, with the increase of capacity and the water head.

随着水电建设的快速发展，机组容量和尺寸急剧增大，转速相应提高，机组振动及其诱发的水电站厂房结构振动问题日益突出，对机组振源和振动的研究更加紧迫。

Indirected the basic theory of the current, flux, position of the switched reluctance drive based on the flux method. proposed a position sensorless technique for SRD with energy optimizing strategy. Presented an mathematical method of the average torque maximization. Matlab simulated optimal switching angle at different speed, and verified by experiment.

为了便于转子位置信息检测，首先讨论了开关磁阻电机电流－磁链－位置关系的基本原理，给出了一种基于能量优化的磁链法的间接位置检测方案，然后推导出平均转矩最大化的数学模型，并利用Matlab仿真出不同转速下的最优开关角，最后通过实验予以验证。

When diesel/CNG dual-fuel turbocharge intercooling engine D6114 runs in dual-fuel mode, only diesel fuel is supplied when starting and idling, and when engine speed is beyond the preset value,electronic control system send out command to limit diesel fuel injection amount,and natural gas begin to enter into cylinder through mixer to take part in burning, at this time small a mount of diesel fuel shall play mainly a role of ignition,and engine load is changed by altering natural gas supply amount.

D6114柴油/CNG双燃料增压中冷发动机当以双燃料方式工作时，发动机起动和怠速只燃用柴油；当转速超过某设定值，电控系统发出指令限制柴油的喷油量，天然气经混合器进入气缸参与燃烧，此时少量柴油供给主要起引燃作用，发动机负荷变化则通过改变天然气供给量的大小来实现。

Often when by hollow being absorbed , power-driven rotational speed in the brains is the lowst , and the intelligence quotient almost equals to 0%, then emergence to puzzle to person , and it is gloomy , irritatedly .

人往往在被空虚吞没时，头脑中的机动转速最低，智商几乎等于0%，然后出现迷惑，郁闷，烦躁。

In this paper,the formation of winding tension ,contralling properties and the relation between the rotation speed of leady drive motor and winding diameter are introduced.

主要从原理上阐述了粗纱卷绕张力的形成、控制实质及粗纱卷径与主传动电机转速关系，并采用变频器S曲线功能和转矩提升功能控制主电机软起动、缓慢停车、稳定运行，实现对粗纱卷绕张力的控制，解决了粗纱生产质量稳定问

Strains D1 and D2 have the highest lipolytic activity in culture supernatent, great amounts lipase produced by remainder strains was located on the outer membrane of the cell envelope and was not released into the culture medium .

在摇瓶发酵水平上进行产酶优化试验，确定D2产脂肪酶的最佳培养方案为：培养温度9℃，摇床转速180r/min，培养时间40h，以2216为基础培养基，5g/l牛肉膏做碳源，6g/l氯化铵做氮源，分别替代酵母膏和蛋白胨。

In this paper, the influence of liquid loadage, rotating speed, xylose concentration and organic nitrogen source on xylose fermentation by Candida shehatae CICC 1766 to produce ethanol were investigated. Besides, ethanol tolerance of Candida shehatae CICC 1766 was studied.

研究了装液量、转速、木糖浓度、有机氮源等条件对休哈塔假丝酵母CICC 1766发酵木糖生产乙醇的影响，探讨休哈塔假丝酵母的乙醇耐受能力。

If it can reachthat speed, then you know the engine is loafing at all realistic speeds.

如果能达到这一速度，那么你知道是蛇王发动机转速在所有现实。

When lipase N435 was 2.5gL^(-1), RS-ethyl mandelate was 0.25gL^(-1), water to RS-ethyl mandelate was 5:1, the reaction temperature was 40℃, the speed of agitation was 200rmin^(-1), the R-ethyl mandelate conversion could reach 41.6%, and enantiomeric excess e.

确定了最适的反应条件：脂肪酶N435浓度为2.5gL^(-1)，RS-扁桃酸乙酯浓度为0.25molL^(-1)，水：RS-扁桃酸乙酯的摩尔比为5：1，反应温度为40℃，摇床转速为200rmin^(-1)，反应时间为24h。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐