Low blood flow velocity measurements using Doppler ultrasound technique;
利用超声多普勒技术测量低速血流
On the basis of a lot of experimental investigation the paper has demonstrated the occurrence of the starting pressure at porous flow and nonlinear non-darcy rule during low velocity flow through porous media using the method analyzing the experimental data characteristic.
在大量实验研究的基础上 ,笔者针对低速非达西渗流曲线普遍近似于线性通过坐标原点的表观现象 ,采用实验数据特征分析的方法 ,进一步论证了存在渗流启动压力和低速渗流时出现非线性的低速非达西渗流规
The low velocity smooth properties of DC PWM servo system affect the precision of the tracking system.
直流PWM 伺服系统低速平稳性影响跟踪系统的精度,随着精密跟踪技术的发展,对跟踪系统性能和精度的要求不断提高,相应的要求提高伺服系统的精度。
Influence of aspect ratio on flow field performance of linear bowed stator in compressor at low speed;
低速条件下展弦比对弯叶片扩压静叶栅流场性能的影响
Speed control for semi-conductor low speed reluctance motor;
半导体换流低速磁阻电动机的速度控制
Fault Diagnosis of the Bearing with Low Speed and Incomplete Revolve and High Load;
超低速旋转不完全重载大轴承故障与诊断探讨
Study on Friction Force Model of Cylinder in Low-speed Motion;
气缸低速运动摩擦力模型的研究
The experimental investigation of the sound of splashes of low-speed water entry;
低速物体入水溅落声特性研究
Research on Low-Speed and High-Torque Permanent Magnetic Synchronous Machine Using in Gearless Elevator;
无齿轮电梯用低速大转矩永磁同步电动机的研究
A new type of slow speed brushless DC motor system with a two phase hybrid stepping motor and an indncsyn is presented in this paper The main construction, operiation principle and performance are introduced The system model is developed According, to the experiment results the system characteristics are summed u
提出了一种以二相混合式步进电动机作为驱动元件，感应同步器作为位置传感器构成的低速无刷直流电动机系统。
