research and development activities

• 研究开发活动

research and development activities的用法和样例：

例句

1. The Measures define research and development activities and specify the super-deduction of the expenses incurred therefrom.
   办法界定研究开发活动的定义，并规定其费用支出的加计扣除。
2. New product development activity must focus on continuous product improvement.
   新产品开发活动必须集中在不断的产品改良上。