The time of the difference when the mix left the central mixer.
时间的差别时，左边的混合调音台的中央。
2
In the major single market, or central market, approach, the firm selects its mission based on one national market and establishes a marketing mix, and later expands to other national markets.
在这种方法中，公司根据一国市场选择经营任务，建立营销组合，以后再扩展到其他国家的市场。
3
This thesis mainly studies the Hot Mix (Central) Plant recycling Technology and through the analysis of asphalt aging and recycling mechanism, a scientific approach of asphalt recycling is proved up.