A fluidpassageway extends through a syringe piston.
流体通路延伸通过注射器柱塞。
2
A closed valve is associated with a fluidpassageway between the vial and the syringe barrel through a piston.
闭合阀件通过柱塞与小瓶和注射器筒体之间的流体通路相关联。
3
The system also includes a controller for controlling the first and second flow regulators in response to a measurement taken by the flow detector of fluid movement in the fluidpassageway.