The frustrating part was this pattern stayed constant for months, even though we were making the product “better” almost every day.
最无法让人忍受的是这种情形居然维持数月之久，前提还是我们每天都在不断“改进”着产品。
2
After the constant exploration in this field, the author think the teaching and learning pattern should be transformed greatly under the condition of the modern information technology.
通过在实践中的不断探索，提出在现代信息技术条件下，教学模式、学习模式的大幅转变。
3
According to the change pattern of some parameters in metal cutting processes, this paper proposes for the first time a new time series analysis model-Autoregressive Constant model ARC (2).