metric grain

1. If we can't ease the constraint on the transformation from potential to production, during the summit period of population in 21st century, it's possible to have a gap of 100 million metric tons between the demand and the supply of grain in China.
   倘若粮食增产潜力转化为现实生产力的制约得不到缓解，在21世纪人口高峰期时，中国的粮食供求出现1亿吨的缺口是很有可能的。
2. Second is the theoretical and metric economic researches about policy evolution on grain production based on the Neoclassical economic theories;
   第二类是相对规范的运用新古典经济理论对粮食政策进行的学术性理论实证或经济计量性质的经验研究；

noun

1. a weight unit used for pearls or diamonds: 50 mg or 1/4 carat

   Synonym:    grain