doublechecks

"长度单位_馆档网 ... "双合偏心盘;复式偏心盘"," double cam" "双格子"," double checks" "双层布;双层织物"," double cloth" ...

Separation of Powers and... ... 分权： Delegate Powers 两种抑制： double checks 企业核算： business enterprise checks ...

...对检验结果的负责、信心及技术分享，同时可供客户作为重复验证(double checks)或未来可以相同的方法自行相同的试验。