Receptive vocabulary size, productive vocabulary size, and depth of vocabulary knowledge correlated with each other significantly at the four different learning stages.
接受性词汇量、产出性词汇量与词汇深度知识在四个学习阶段均有不同程度的显著相关。
2
A new type of productive hob which can change the cut width and depth on each tooth of the hob is presented in this paper. It's title is turn cutting hob.
本文提出了一种通过改变滚刀每个刀齿的切削厚度与切削宽度的，新型的高生产率滚刀—轮切式齿轮滚刀。
3
The old light oil reservoirs in Shuguang Oilfield are deeply buried and low productive. The effect is poor by deepening pump depth with common pumps.