specified standard

基本解释

While helmet laws exist in more than 90% of countries, only 40% have a law that covers both riders and passengers while also requiring that helmets meet a specified standard.
虽然90％以上的国家具有使用头盔的法律，但只有40％国家的法律将骑车人和乘客都包含在内，同时要求所戴的头盔应符合特定标准。
Some common materials used in PCB surface coating were compared under specified standard testing conditions, and useful information was provided for the selection of coating for PCB.
对国内外几类常用的PCB表面防护涂料在规定的标准测试条件下三防性能的比较，从而有助于三防涂料在PCB组件产品应用上的优选。
Results show that all properties of this kind of bush meet or exceed specified standard requirements, which establishes the foundation for its application on speeding-up railway cars and freight cars.
结果表明，各项性能均达到或超过了标准规定的技术要求，为该衬套在提速客货车中的应用奠定了基础。

So William duPont built his depot from a standard Southern Railway floor plan that specified one entrance marked "White" and another marked "Colored."