This scheme adopts VG949P produced in Russia as a sensor that includes some merits such as small volume, low weight, high performance and price ratio and so on.
The closed planetary gear drive mechanism can achieve a high transmission ratio and a high efficiency in transmitting large power with small volume, light weight and compacted structure.
闭式行星传动可在体积小、重量轻和结构紧凑的条件下实现大传动比，高效率地传递大动力。
3
Portal venous velocity index (PVI) was defined as the ratio of PVV to graft weight (GW), and portal flow volume index (PFI) as the ratio of PVF to GW.