房卡、车钥匙、普通钥匙、防盗门钥匙……“为什么用钥匙能轻松地打开锁呢?”锁是个奇妙的物体,厚实的外壳里究竟有什么奥秘?如何能将一把锁设计的更加安全?在“科学探案——锁的开启秘密”科学实践现场,每名同学手里都有一把透明的锁。中国人民公安大学(后简称公安大学)刑事科学技术学院教授、副院长郭威介绍,这些锁都是为了初中生上课特别定制的。在课程的 Room keys, car keys, common keys, security door keys ... “Why can I easily open the lock with a key?” “Lock is a fantastic object, what is the secret in the thick shell? How can a lock design More secure? In the ”science exploration case - the lock open the secret“ ”scientific practice site, each student has a transparent lock in his hand. Guo Wei, professor and vice president of the Criminal Science and Technology Institute of the Chinese People’s Public Security University (later referred to as Public Security University), introduced these special locks for junior middle school students. In the course