The pitch circle diameter (PCD) of a gear is a vital measurement when using gears. When you mesh two gears together, the teeth need to mesh to a precise distance, if too deep then the teeth will bind and wear, too shallow and you will get excessive back lash and risk damage to the teeth.
Burping gas that smell strongly of rotten eggs is actually indicative of the presence of sulfur in our stomach. This is the reason why this type of burps is commonly known as sulfur burps. The smell of sulfur burps or rotten egg burps usually comes from the presence of hydrogen sulfide.
To see a crate of eggs, denotes that you will engage in profitable speculations. To dream of being spattered with eggs, denotes that you will sport riches of doubtful origin. To see bird eggs, signifies legacies from distant relations, or gain from an unexpected rise in staple products.