upgrading的例句（upgrading在句子中的用法）

• The thesis explains investment decision of R & D upgrading through case analysis finally. 最后通过案例分析进一步阐释R & D升级投资的投资决策.
• Practical application results are perfect after the well done upgrading. 改造实施后达到理想的使用效果.
• Many people are upgrading their mobiles to top-end models. 很多人不断将手机升级到最高档的款式。