查询词典 speed boss

The results showed: when TLC solvent system was: chloroform - methanol - diethyl amine = 90:9:1, alkaloids from lotus leaves were well isolated, and five components were isolated and identified by spraying Dragendorff reagent. The optimal conditions of HPLC solvent system were: methanol- water - diethyl amine = 75:25:0.0125. Under the conditions, components of alkaloids from lotus leaves were separated very well, and ideal RP-HPLC peaks were obtained.5、Methods of High Speed Counter Current Chromatography and preparative High Performance Liquid Chromatography applied to identify and purify alkaloids from lotus leaves were set up. When solvent system of HSCCC was: chloroform - methanol - water (pH=4.00)= 4:3:2, speed of chromatogram was 700rpm, flow speed of the mobile phase was 2mL/min, four pure components relatively were attained by isolation and purification.

结果表明：薄层层析溶剂系统为氯仿：甲醇：二乙胺=90：9：1，使荷叶中的生物碱达到了较好的分离效果，并用改良的碘化铋钾试剂喷雾显色，共分离鉴别出了5种荷叶生物碱；分析型HPLC分析检测的较优溶剂系统为甲醇：水：二乙胺=75：25：0.0125，使荷叶生物碱的各个组分达到了基线分离，并获得了较好的峰形。5、建立了高速逆流色谱和制备型HPLC技术分离纯化荷叶生物碱的具体方法。H(来源：ABC46论文网www.abclunwen.com)SCCC法在溶剂系统为氯仿：甲醇：pH4.00的水=4：3：2，色谱仪转速为700rpm，流动相流速为2mL／min的条件下，分离纯化得到了4个纯度较高的化合物。

The purpose of a motor speed controller is to take a signal representing the demanded speed, and to drive a motor at that speed.

马达速度控制的目的，是要代表一个信号要求的速度，并在该驱动马达的速度。

When considering the speed is enough to first check whether the normal speed motor itself can be used to measure the tachometer, the motor speed under normal circumstances, consider whether there will be magnetic coupling of the slip.

在考虑转速是否够时，先要检查电机本身的转速是否正常，可用转速计进行测量，在电机转速正常的情况下，可考虑是否会出现磁力联轴器的滑脱。

This paper aims at the design, implementation and evaluation of an industrial brushless servomotor drive. The proportional-plus-integral speed control with gains tuned by an extension of the frequency-zone method and anti-windup PI speed control based on self-conditioning techniques are studied. The parameters of speed performance criteria, control loop bandwidth, per normal inertia, and noise sensitivity are employed to evaluate the performance of the drive.

本文针对工业用无刷伺服马达驱动器进行设计与制作，延伸频率区域法分别设计比例积分控制之增益值，以自我条件技术完成比例积分速度控制之反卷起设计，并依据速度性能准则之参数，如控制回路频宽、惯量标么值、杂讯灵敏度等，进行驱动器之性能评估。

Machine drive principle: No matter it is mono-block type or detached type, we take electromotor as original motor to convey the power to retarder input shaft (high-speed rotation axle) through direct connection or triangular belt and retarder output shaft (low-speed rotation shaft) connects directly with the joint screw or low-speed rotation shaft connects with the main shaft joint screw through coupling thrust bearing socket.

机械传动原理：本司产品无论是整体式的还是分体塑料再生机，均以电动机为原动机，通过直连式或三角带将电动的力传递给减速器轮入轴由减速器输出直通联接螺杆或经低速轴通过联轴器止推轴承座主轴联接螺杆，使螺杆按设计要求及生产工艺要求的扭矩和转速匀速地旋转，以达到塑料塑化后定压、定量、均匀地连续挤出的目的。

The rub-impact between rotor and stator often occurs because the rotor shaft stiffness decreases following the occurrence of the crack in the rotor shaft, and thus the coupling fault with rub-impact and crack is hackneyed fault type. Based on the nonlinear dynamical model of the cracked rotor-bearing system with rub-impact, the stability of the periodic motion and instability way were studied in unbalance-rotating speed plane and rotor/stator clearance- rotating speed plane and crack depth- rotating speed plane, and the main results were validated by the experiment.

转子轴承系统裂纹故障的出现会引起转子系统转静件之间碰摩故障的发生，因此裂纹碰摩耦合故障也是转子系统常见的故障类型，本文在裂纹碰摩耦合故障转子轴承系统的非线性动力学模型基础上，分析了系统在不平衡量-转速、碰摩间隙-转速、裂纹深度-转速等参数域内，周期运动的稳定性及其失稳规律，并用实验验证了主要理论结果。

Based on the survey of the traffic flow in Changchun city arteries, the scatter charts of vehicle speed-low data were plotted, the linear regression equations of scatter plots and their boundaries were derived and compared with the curve of Greenshields speed-flow model and the scatter plot of the freeway data, thus the speed-low characteristics in urban arteries were established, being of help for the traffic managers to determine the traffic signal control strategy.

以长春市干线道路的交通流实测数据为依据，绘制了速度流量的散点图，建立了散点图及边界的线性回归方程，并与Greenshields速度流量理论模型曲线、高速公路的速度-流量散点图进行了对比，分析了城市道路的速度-量特性。实际应用表明，该特性分析能为交通管理者确定信号控制策略提供速度流量依据。

For new HSR,"although the world speed record for a wheeled train was set in 1990 by a French TGV which reached a speed of 515 km/h (320 mph),"(Quade, 2003) high-speed trains typically travel at top service speeds of between 250 km/h (150 mph) to 300 km/h (180 mph).

新叶， &尽管目前世界速度纪录轮式火车是在1990年由一位法国的TGV达速度515公里/小时( 320英里)，&( quade ， 2003 )高速列车一般旅行顶服务速度在250公里/小时( 150英里)，以300公里/小时( 180英里)。

German autobahns are famous for having no universal motorway speed limit, although about 30% of them have posted speed limits[5] and about 10% are equipped with motorway control systems that can show variable speed limit

确实是这样，欧洲人一定要高于你这个标准，因为欧洲特别是德国时速设计非常高，高速公路没有时速限制，它得考虑250公里300公里时速的

Some concrete suggestions for increases of packing fraction and rotating speed are presented, the rotating speed is 11.3% higher than the supercritical one by data analysis, which results in yield increasing and energy consumption decreasing within the optimum rang of rotating speed.

提出增加充填率和加快转速的具体措施。尤其是通过数据分析确定该机转速超过其临界转速11.3%左右，在最佳转速区段，其增产节能降耗效果最佳。

The use of the web to spread fears that flicking the switch on the LHC could create a Black Hole that could swallow up the Earth particularly concerned him, he said.

他说，使用互联网散布恐慌说启动LHC会生成一个可能吞噬地球的黑洞的做法让他感到忧虑。

Not a single word have I written down.

我一个字也没有写下来。