pdy
美
英 
- 网络前列腺痛;预拉伸丝;部分拉伸丝(partially drawn yarn)
例句
We said the line integral of F dot n ds is actually the line integral of - Q dx P dy.
我们讲过,F•nds的线积分,实际上就是-Qdx+Pdy的线积分。
It is integral along C of negative Q dx plus P dy.
它是-Qdx+Pdy沿着C的积分。
Yuan H M. Investigation of PdY Alloys[J]. Rare Metal Material and Engineering, 1992, 21(6).
袁弘鸣。钯钇合金的研究[J]。稀有金属材料与工程,1992,21(6)。