The new technologies of mass dissemination could reach large numbers of people with unprecedented speed and efficiency, but put control of the flow of information into the hands of a select few.
大规模传播的新技术以前所未有的速度和效率影响到大量的人，但是它却将信息流动的控制权交给少数被选拨出来的人手里。
Frequency control the use of fans, water pumps, type of machinery to carry out speed control method to regulate the flow of energy conservation, economic efficiency is very important significance.
采用变频调速控制，对风机、水泵类机械进行转速控制来调节流量的方法，对节约能源，提高经济效益具有非常重要意义。
The flow field calculation of the detector inside gas pipeline under drainage state was presented for the problem of speed control of the detector inside gas pipeline.
针对输气管道内检测器运行速度控制问题，研究了在泄流状态下输气管道内检测器的流场计算方法。
Liquid system is the need for oil pressure, flow, direction control and regulation to meet the needs of working parts in the power, speed and direction requirements.
液正系统工作，必须对油液压力、流量、方向进行控制与调节，以满足工作部件在力、速度和方向上的要求。
The flow of each axle bush applies speed control valve to regulate, with high precision and low interference effect.
每个轴瓦的流量采用调速阀进行调节，精确度高，互相干扰小。
Changing the speed of electric motor by using ac frequency conversion is to regulate output flow of hydraulic pump to control the velocity of the motion of hydraulic actuator.
通过交流变频调速改变电机的转速来调节液压泵的输出流量。控制液压执行元件的运动速度。
The PLC is used in automatic pressure surge control, oil temperature control, product test control, and automatic measurement of pressure, flow, temperature, speed, torque, etc.
PLC下位机完成转向泵的压力冲击自动控制、油温自动控制、出厂试验自动控制和压力、流量、温度、转速、转矩等参数的自动测试。
The PLC unit and the touch screen are employed for local control of the system to achieve precise adjustment to the temperature of heat source, the speed and flow of air.
控制系统用PLC作为下位机进行现场控制，通过触摸屏输入开关、频率、温度等信号，实现对使用的热源温度，风速，流量等进行精确的调节。
For the flow regulation of the controllable traffic in high-speed computer networks, optimization of control parameters directly influence on a PI controller.
对于计算机高速网络中能控交通流的调节，PI控制器的参数优化直接影响控制系统的性能。
Along with the deep development of study, the microjet technology will be possibly applied to control the aerodynamic flow of the high speed aircraft surface and the thrust vector of rocket engine.
并指出，随着研究工作的深入，该项技术还可望用于高马赫数飞行体表面气体流动控制、火箭发动机推力方向控制等。
Frequency control the use of fans, water pumps, type of machinery to carry out speed control method to regulate the flow of energy conservation, improve cost-effectiveness of great significance.
采用变频调速控制，对风机、水泵类机械进行转速控制来调节流量的方法，对节约能源，提高经济效益具有非常重要意义。
Experimental investigation on the control of dynamic stall type vortex flow was made in a low speed wind tunnel by using phase averaged pressure measurement technique.
本文对动失速型非定常分离涡结构的控制方法，在低速风洞中应用相平均测压技术进行了实验研究。
XT Cantilevered speed-regulating belt scale performs high-precision measuring and batching control of closed-loop flow by rapidly acquiring signals of weight on the belt and running speed of the belt.
悬臂式调速皮带秤是通过高速采集皮带机上的重量和转速信号实现闭环式流量的高精度计量与配料控制。
The mean speed of blood flow in MCA, the mean blood viscosity and erythrocyte deformity index at 3to 7days were lower than those in the control group(P<0.05).
纳洛酮组第3～7天内的MCA的平均血流速度、平均全血黏稠度和红细胞变形指数皆低于对照组（P<0.05）；
An experimental investigation on the active control of dynamic stall type unsteady separated flow is carried out in the low speed wind tunnel using a phase averaged pressure measurement technique.
本文对动失速型非定常分离流的主动控制方法在低速风洞中进行了实验研究。
However, if the effective descaling is carried out, it is very important to control the feeding speed of steel billet, the flow rate of water and the pressure of water.
但要实现有效除鳞，控制钢坯速度、水的流量及水压大小至关重要。文章介绍了高压水除鳞控制系统的结构与功能。
Outlet pressure and flow are normally controlled by adjusting valve clearance and it causes considerable energy waste. Frequency control of motor speed is a method of solving the problem.
常规的通过调节阀门开启度来达到调节注水泵出口压力和流量的作法，会使很大一部分能量造成浪费，要解决这个问题，可以采取对注水泵进行调速的方法。
Results Before delivery, both the resistance and speed of blood flow increased in brain artery of patients with PIN, being notably different from the control group.
结果分娩前妊高征组脑动脉阻力增加，血流加速，与对照组比较有显著性差异。
As one of the most effective techniques to control giant debris flow, the high-speed drainage structure is composed of both converge trough structure and high-speed drain trough structure.
速流结构是治理公路大型泥石流的有效技术类型，由汇流槽和速流槽组成。
The hydraulic system of injection molding machine is the representative example, it need to control cylinder speed and hold pressure, so it indeed to use pressure and flow rate multiple valve.
在注塑机液压系统中，要求能在注塑油缸运动的过程中对其进行速度控制和在保压过程中进行压力控制。 这就需要用到压力-流量复合阀来进行压力和流量的控制。
The speed of the compressor is varied to control the refrigerant flow rate and match the cooling load requirements of the vapor compression system.
该压缩机的速度被改变以控制该制冷剂的流速和配合蒸气压缩系统的冷却负荷需求。
Flexible control, the motor adjust air flow can be single period of speed , three or five periods of speed. It is also enclosed operation, abnormal indicator and abnormal dry contact for control.
灵活的控制方式，可作单段速、三段调速、五段调速或无级调速调节风量并附运转/异常指示灯/异常干接点，便于监控；
To this problem, the variable-frequency speed regulation and flow regulation split-ranging coordinated control of the centrifugal pump for energy saving is given.
离心泵的变频调速是目前广泛采用的流量调节方法，高效节能是其最大优点，但是当流量降低时，可能造成压头过低而影响后续流程。
Operating the engine-control handle, the engine speed can be controlled, then the flow of control system can change the operation speed of frame.
通过操作在多路换向阀旁的油门手柄，可控制发动机的转速，从而调节系统的流量改变机构的工作速度。
This ship oil discharge monitoring and control system can measure signals of oil density, flow and ship speed by sensors and calculate instantaneous oil discharge rate and total oil discharged.
所研制的排油监控系统能够通过传感器来测取油份浓度，流量和船速信号，并经计算机计算出油量瞬时排放率和排油总量。
Through the detection of flow, pressure and level, as well as the rotating speed control unit, the measurement and closed-loop control system is structured.
测控系统通过流量、压力和液位检测单元以及转速控制单元构成闭环控制系统。
The speed can be kept constantly during the load regulation by compensating process. The structure of control system, the computer interfacing circuits and the program flow charts are given in …
文中给出了系统的构成、微机接口电路、程序总框图以及各主要程序的流程图。
The speed can be kept constantly during the load regulation by compensating process. The structure of control system, the computer interfacing circuits and the program flow charts are given in …
文中给出了系统的构成、微机接口电路、程序总框图以及各主要程序的流程图。
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