A fall in the ratio of the two measures ( which they call the vax ) signifies an increase in supply-chain fragmentation .

如果这两者比率下降（他们称之为vax），就意味着供应链细分化加剧。

On this score , 1990 seems a critical point , after which the vax sinks while trade volumes soar ( see chart ) .

从这点上看，1990年似乎是个关键点，从那之后，vax下降，而贸易量却是直升（见表）。