Outdoor SurvivalSkills Every Guy Should Master. Men's Fitness. 2017-09-28 [2017-09-28]. (原始内容存档于2017-11-02) (英语). Wilderness SurvivalSkills. www.wilderness-survival
area)比平滑的切割面要小,因此產生的應力也會比較大,會讓被切割物體上出現數個破口,鋸齒再往復移動,使破口加大,產生切割的效果。 Alloway, David. Desert SurvivalSkills. University of Texas Press. 2000: 38. ISBN 978-0-292-70492-3.
(原始内容存档于2013-05-28). Malone, Michael. The Everything College Survival Book: From Social Life To Study Skills--all You Need To Fit Right In (Everything: School and