ʯɰָƷɰߣҪָʯУȽϴʯٴɳƷɰߣڼгƷɰС0.45mmʯϱΪƷɰʯɰ豸ͬijƷɰӦڲͬĿС
ʯɰָС0.5mmµʯӣɰ豸ļӹӦijƷɰҪʯͷƳʯϣȻһЩܴﵽƷɰȵϣٴξӦijƷɰǹ˾ԱƵʯɰߣҪʹõ豸ҪдʽȻɰ˫תɰãʵеЧǺõģõijƷɰʯϣЩʹߵõҪõĶࡣ
õijƷɰһģԷΪͬķ࣬ϸģʽз࣬ɰƷɰƽһ㶼0.5mmϣɰ25%ڽĿͻӹӦù㷺һЩĻӦøǹ㷺ģɰָƽ0.5-0.35mm֮ijƷɰҲӦڻɰУڽҵжשòɰϸɰָƽ0.35-0.25mm֮䣬ɰԭȲһγɿõļϣԭϻһɰƷӦûǹ㷺ġ
15ҷ㣬ҪǵķԭԸľ룬ٶȣͻߣĿǰиڳﱸ......