锤击选矿; 人工敲碎
Cob \Cob\, v. t. [imp. & p. p. {Cobbed}; p. pr. & vb. n. {Cobbing}.] 1. To strike [Prov. Eng.] --Halliwell. 2. (Mining) To break into small pieces, as ore, so as to sort out its better portions. --Raymond. 3. (Naut.) To punish by striking on the buttocks with a strap, a flat piece of wood, or the like. Cobbing \Cob"bing\, a. Haughty; purse-proud. See {Cob}, n., 2. [Obs.] --Withals (1608).