The conventional formula for calculating Zinc-Equivalent of element which was criticized in that paper is correct, and the proposed formula is not proper.

Zinc, retinol equivalent, thiamin, riboflavin, ascorbic acid were inadequate in their diets, the intake of calcium accounted for 30.6 %(males) and 31.4%(females) of RDA.

Two kinds of rust inhibitors improve on the antirust property. The studied zinc -plated wire rope grease in the quality is equivalent to the same k...