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the grades of eggs are like the rating of the eggs. Grade A eggs are the best grade B eggs are the second best grade C eggs are okay grade D eggs aren't very good and so on.
The past tense of "grade" would be "graded".
A receptionist is graded in different ways. They can be graded upon their experience, the skills they have or how good of a job that they do.
Eggs are graded Grade A, AA or B based on the quality of the shell, white and yolk and the size of the air cell within the egg. Grade "A" indicated an assurance of: Thick albumen (white) A round, well centered yolk A clean, uncracked shell with a "normal" egg shape. A small air cell within, less than 5mm.
The past tense is graded.
The past participle is graded.
They use grade A beef.
They do have Grade B eggs, they're just not as good (well formed) as Grade A eggs and so not sold in most supermarkets.
Grade A.
Caviar comes from fish and is graded depending on which fish it came from.
73% or C
Dense grade: Means after graded, the material will form solid without hole. Open grade: means the solid will have over 15% holes.