More injectionflow rate, slim branch injection pipe and long pipeline resulted in more resistance at the branch injection pipe.
由于注水量较高、注水支线管径较细、管线较长等原因，导致注水支线阻力偏大；
2
Piston-cylinder is the fuel measurement unit of the injectionflow meter and plays a crucial role in the system measurement accuracy.
活塞测量缸作为测量仪的油量测量单元，其结构设计好坏直接影响到系统的测量精度。
3
Conclusion Multi-slice spiral ct can provide quantitative analysis to renal blood perfusion, but injectionflow rate influence the perfusion parameters.