step-by-step progress

• 渐进式

step-by-step progress的用法和样例：

例句

1. Progressive throttling of flow shall be accomplished by a characterized profile quad seal retainer washer.
   流量的渐进式节流应该通过截面为方形的密封固定垫圈来实现。
2. We cannot afford not to be interested in the progress of its uncharted, incremental economic and political reforms, and we must want them to succeed.
   我们承担不起忽略中国不明朗的渐进式政治经济改革的进步。