?? ?????????????????????????
![](https://image.chezhanri.com/2019/0823/20190823135118763.jpg)
????:1?????????vx:?????????
2?????????
3???9598?
4?????????????
5?????????
????????????6????????????????27??? ??????????????,?????????,??????????????????(ISO/TC 81)?,??????????
?????????????,??????????“??”??????????????????????(FAO)???,?????????????30%~40%??????????????????????,?????,??????????????????????????????????
ISO/TC 81??????,????????,???
???????????????:????