absolute grading standards的用法和样例：
- The ammonium sulphate also reached the first - grade standard.
- The measures for qualification accreditation and the grading standards shall be formulated by SBCR separately.
- The development and introduction of beef grading standards should be undertaken as a national program with implementation at the provincial level.
- The first part of examination guide adopts the form of Q&A to introduce the requirements, grading standards and notices in taking MHK.