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.
门静脉流速指数(PVI)被定义为PV V与移植物重量(GW)的比率，门静脉血流量指数(PFI)为PVF与GW的比率。
High-volume ratio: a compact design, small size, light weight, flexible and convenient to carry.
高容积比：紧凑设计，体积小，重量轻，携带灵活方便。
Weight ratio of the density of high-volume, higher ambient temperature range of tolerance and are able to withstand the vibration of high intensity.
体积重量比密度高，更高的耐受环境温度范围，并且能经受高强度的振动。
The cost of the power supply is low, the volume is small, the weight is light, and the ratio of property to price high. It should be a kind of c...
该送丝电源成本低，体积小，重量轻，性价比高，是一种值得推广的电路。
The cost of the power supply is low, the volume is small, the weight is light, and the ratio of property to price high. It should be a kind of circuit worth...
该送丝电源成本低，体积小，重量轻，性价比高，是一种值得推广的电路。
The optimum extraction time and ratio of sample weight to extractant volume were chosen according to the extraction results of indicator parameters and heavy metals in leachates.
分别根据表征参量和重金属在萃取溶液中的含量变化确定最优萃取时间和萃取样液比。
The optimum extraction time and ratio of sample weight to extractant volume were chosen according to the extraction results of indicator parameters and heavy metals in leachates.
分别根据表征参量和重金属在萃取溶液中的含量变化确定最优萃取时间和萃取样液比。
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