精度等级: accuracy classaccuracy gradeaccuracy rateaccuracy ratingclasof accuracyclass of accuracyclass of-precisiongrade of accuracygrade of precisionorder of accuracyprecision class
Such abrasives maintain accurate profiles for extended periods of use which is especially well - suited to continuous high accuracy grinding with automated and semi - automated equipment . they are valuable in the economical management of multi - machine production facilities 它可在很长使用期间内不修整，非常适宜自动化，半自动化和多机台管理生产中稳定地高精度磨削。
