| 1. | Measurement of fluid flow in closed conduits - guidelines on the effects of flow pulsations on flow - measurement instruments
密封管道中液体流量的测量.脉动流动对流量测量仪器影响的指南 |
| 2. | The analysis about the central gear ' s mentions impact on the flow pulsation of the five poles of the external meshing gear integral pump
中心轮齿数对五极外啮合齿轮复合泵流量脉动的影响分析 |
| 3. | For reference , the smoking of a cigarette leads to the increase of the width of the range of blood flow pulsation to 0 cm / sec ? 21 . 0 cm / sec
提供参考，吸一支烟导致对0厘米秒21 . 0厘米秒之血流脉动之血范围宽度增加。 |
| 4. | Flow pulsation of hydraulic pumps is the source of pressure and flow pulsation in hydraulic systems . one method to reduce the pressure and flow pulsation of system is to reduce the flow pulsation of hydraulic pumps
液压泵的流量脉动是液压系统存在压力及流量脉动的根源,消除液压系统压力及流量脉动的方法之一是减小液压泵的流量脉动。 |
| 5. | The substantial alteration by 160 % in the range of the blood flow pulsation can negatively affect the function and plasticity of the blood circulatory system and may potentially lead to the development of hypertonic or hypotonic symptoms in the human body
在血流脉动范围内，透过160 %相当可观的变化，可能对血循环系统的功能及塑性具负作用影响，并且可能潜藏在人类身体导致张力亢进或低压症状的发展。 |
| 6. | At last considering the flow pulsation as objective function , optimization of the parameters of the gear using ga method is brought forward and an optimum model is presented to achieve the optimal parameters of the gear that make the flow pulsation lowest
最后以流量脉动为目标函数,采用遗传算法对齿轮泵结构参数进行了优化设计,建立了齿轮泵参数优化数学模型,给出了使输出流量脉动最小的齿轮泵最优参数。 |
| 7. | This test shows that after the 20 minutes of exposure of the human subject to the mobile phone radiation the blood flow pulsation “ jumped ” from the average range of 1 cm / sec ? 6 . 6 cm / sec ( fig . 1 ) to the much higher average range of 0 cm / sec ? 14 . 4 cm / sec ( fig . 2 )
本试验显示人类实验对象暴露在行动电话辐射20分钟之后，血流脉动自1厘米秒66厘米秒（图1 ）之平均范围比较跳到0厘米秒14 . 4厘米秒（图2 ）之平均范围高。 |
| 8. | As external gear pump has the most serious problem of flow pulsation , how to analyze the flow pulsation of gear pump and to optimize the construction parameters of gear pump is especially important for the design and performance improvement of gear pump
在液压泵中,以外啮合齿轮泵的流量脉动最大,因此对齿轮泵流量脉动进行分析,以减小流量脉动为目标,对齿轮泵的结构参数进行优化设计,从而为齿轮泵的设计及齿轮泵性能的提高提供理论基础。 |
| 9. | In this paper , on the basis of the analysis of gear pimp working principle , the mechanism of flow pulsation and methods of reducing flow pulsation are pulsation are studied . the computing formula of transient flow rate and the coefficient of flow pulsation are deduced . the relationship between the gear pump flow pulsation and the construction parameters of the gear is studied
本文在齿轮泵工作原理和流量脉动产生机理的基础上,首先从理论上推导了齿轮泵瞬时流量和流量脉动系数的数学模型,分析了齿轮泵的输出流量脉动与泵齿轮各结构参数之间的关系,并对某型齿轮泵进行仿真分析研究,给出了齿轮泵的流量脉动分析结果。 |
| 10. | Flow pulsation of a specific gear pump is analyzed and the results are given . according to the testing requirement of pump pulsation , the measurement device of the testing flow pulsation , based on iso 10767 - 2 measurement standard , the measurement device of flow pulsation testing is built . high speed dynamic pressure transducer is used to record the pressure pulsation in the pipeline
然后根据齿轮泵流量脉动的检测要求,采用iso10767 - 2测试方法,搭建了齿轮泵流量脉动测试装置,采用动态压力传感器,对齿轮泵系统进行了压力脉动测试,利用压力脉动与流量脉动的比例关系,对齿轮泵流量脉动分析结果进行了验证。 |
