"容许幅度标准" can be translated into English as "allowable tolerance standard" or "permissible variation range standard", depending on the specific context and the nature of the standard being referred to.
"Allowable tolerance standard" is often used in engineering, manufacturing, and quality control contexts to refer to the acceptable range of variation for a particular measurement, dimension, or characteristic.
"Permissible variation range standard" is a more descriptive translation that emphasizes the acceptable range of variation, which might be more suitable in certain technical or regulatory contexts.
In most cases, "allowable tolerance standard" would be a suitable and commonly understood translation.