FDV怎么记

Clinical efficacy ( daily emiction frequency, nocturia frequency, urgency and odynuria degree) and urine kinetic parameters ( FDV, MCC, Qmax) of the 2 groups before treatment, 1 month and 3 months after treatment were evaluated.

观察两组用药前、用药后1月、用药后3月的临床症状（每日排尿次数、夜尿次数、尿急和尿痛程度）和尿动力学参数（FDV、MCC、Qmax）。

If the product has reached the desired pasteurization temperature, the FDV will maintain forward flow and product will move to the next component of the system.

如果产品达到所需的巴氏杀菌温度，那么FDV将保持原来流向，产品会移到设备的下一个部分。

I can replace that FdV Now, I need to tell you what the divergence of a3D vector field is.

，现在我需要告诉你们，三维向量场的散度是什么。