所谓天平带针,就是开启天平时,指针或微分标牌总是向一边摆动,然后才恢复正常摆动,其原因有以下几种:1.中刀间隙小于两边刀的间隙开启天平时,中刀与刀垫先接触,然后才是某边刀与刀垫接触,先接触的这一边就向另 The so-called balance with a needle, that is, open the balance, the pointer or differential signs always swing to one side, and then resume normal swing, for the following reasons: 1 knife gap is less than the gap between the two sides of the knife When the balance is turned on, Knife first contact, and then is a knife and knife edge contact, the first contact on this side to the other