TüV-seal guarantee quality 中的seal怎么解释?某国外产品介绍中出现的 TüV-seal guarantee quality 此处的seal TüV我知道是一个德国质量认证体系.唯一不明白的是seal在此处作何解释?

TüV-seal guarantee quality 中的seal怎么解释?某国外产品介绍中出现的 TüV-seal guarantee quality 此处的seal TüV我知道是一个德国质量认证体系.唯一不明白的是seal在此处作何解释? 1factory with Q seal seal seal seal seal seal The quality bank Guarantee is transferable 急 加分The quality bank Guarantee is transferable with our written consent only.This issuance of this quality bank Guarantee is permitted according to America law .This quality bank Guarantee is subject t I=q/t和a=v/t为什么是定义式? Warranty seal seal是什么意思 seal the shipper seal seal是什么意思 Is this your sign-in seal?If it isn't,make sure you're on a legitimate Yahoo.帮我翻译一下这个有什么用吗？seal... matlab函数计算t=0;0.01;0.6;v=sin(628*t);D=10^(-8);u=10^(-14);r1=100;r2=0.625;v=(((u/D^2).*q.*r1.*(r1-r2)+r2)+r2)*diff(q,t);怎样才能计算出q啊?从表达式中分不出q,一直报错没定义q就是v=q+diff(q,t).已知v求q,但q分离不出 guarantee是什么意思 guarantee是什么意思