医生看病,常用叩诊或切脉。那是专门的学问,不是我们要说的话题。不过类似叩诊和切脉的方法,日常生活中也常常见到。例如,有经验的人挑西瓜,用手轻轻一弹,根据声音和手感就知道瓜的生熟;瓷器店里的伙计,轻轻敲几下碗瓶,根据声音就可以挑出有细小裂纹的次品,如此等等,不一而足。然而你可曾想到,我们煤矿工人经常使用的“敲帮问顶,”不妨说是一种特殊的叩诊和切脉。 Medical doctor, commonly used percussion or cut the pulse. That is special knowledge, not the topic we are talking about. However, similar to the method of percussion and cut the pulse, often seen in daily life. For example, experienced people pick watermelon, lightly blow a hand, according to the sound and feel to know the melon’s raw and cooked; porcelain shop guy, gently tap a few bottles, according to the sound can pick out a small crack Defective, and so on, not enough. However, you may have noticed that what we coal miners often use as a “knock-on” is a special kind of percussion and pulse cutting.