例句與造句

1. They occupy symmetric positions on either side of the Sea Channel, each at the conjunction of eight paths.
2. There are 3 symmetric positions, and 6 pairs making the total 15 permutations of one or more rings.
3. In other words, he assumed that the magnitudes of the components of a physical property in symmetric positions are equivalent.
4. His proposed mechanism for racemization involved a subsequent [ 2, 6 ] hydride transfer, which allows the carbocation to be located at either of these two symmetric positions.
5. It's difficult to find symmetric position in a sentence. 用symmetric position造句挺難的