# 附件

- [A.1: 发行说明](/chinese_1_3_3/appendix/a.1-updates-and-bug-fixes.md)
- [A.2: 背景资料](/chinese_1_3_3/appendix/a.4-background-information.md)
- [A.2.1: 材料的基本性能](/chinese_1_3_3/appendix/a.4-background-information/a.4.1-basic-properties-of-materials.md)
- [A.2.2: 有关荷载的附加信息](/chinese_1_3_3/appendix/a.4-background-information/a.4.2-additional-information-on-loads.md)
- [A.2.3: 设计静态可行性结构的技巧](/chinese_1_3_3/appendix/a.4-background-information/a.4.3-tips-for-designing-statically-feasible-structures.md)
- [A.2.4: 减少运算时间的技巧](/chinese_1_3_3/appendix/a.4-background-information/a.4.4-hints-on-reducing-computation-time.md)
- [A.2.5: 自然振动、本征模和屈曲](/chinese_1_3_3/appendix/a.4-background-information/a.4.5-natural-vibrations-eigen-modes-and-buckling.md)
- [A.2.6: 用于断面优化的方法](/chinese_1_3_3/appendix/a.4-background-information/a.4.6-approach-used-for-cross-section-optimization.md)
- [A.3: 参考书目](/chinese_1_3_3/appendix/bibliography.md)