物料成本在很大程度上受世界市场燃料和矿产价格的制约。
Their materials costs are largely governed by prices on world markets for fuels and ores.
目前，制约质子交换膜燃料电池商业化的主要是燃料电池的寿命问题。
The major hurdle for the commercialization of fuel cell is the durability issue of the fuel cell.
生产成本过高是制约燃料乙醇大规模推广应用的主要因素。
The widely using of fuel ethanol was limited by its high production cost.
应用推荐