| 1. | The existence of rich resources is not a sufficient condition for developed industry, nor even a necessary one. but it helps .
蕴藏丰富的资源不是工业发达的充分条件，甚至也不是必要条件。但它有助于发展。 |
| 2. | Two sufficient conditions for hamiltonian line graphs
哈密顿线图的两个充分条件 |
| 3. | Some necessary and sufficient conditions of finite groups
有限群的一些充要条件 |
| 4. | A new sufficient condition for hamilton - connected graphs
连通的一个新的充分条件 |
| 5. | A sufficient condition for equitable coloring of caterpillars
着色的一个充分条件 |
| 6. | Some necessary and sufficient conditions on lucas sequences
序列的几个充要条件 |
| 7. | Some sufficient conditions of finite solvable groups
有限群可解的一些充分条件 |
| 8. | A new sufficient condition of conditional extreme value
一个新的条件极值的充分条件 |
| 9. | Some sufficient conditions to quasi - convex functions
拟凸函数的若干充分条件 |
| 10. | A sufficient condition for s - hamilton - connected graphs
连通图的一个充分条件 |
