chargen.责任；电荷；指控；费用；照顾vi.要价；充电；向前冲，冲锋；记在账上vt.控诉；赊帐；给…充电；委以重任；归罪于；装填（炸药等）charged offv.归于

1. Their antistatic performances were determined using methods of electrification voltage by friction and surface density of charge.
   采用摩擦起电电压法和电荷面密度法，对其进行了抗静电性能测试。