orders must be placed a week in advance.
Engravement resistance: Force required to engrave rifling onto the bullet's surface.
Here, intuition fails because it does not take into account the fact bullet-to-bore friction depends critically upon bullet toughness, and that bullet-to-bore friction is a far more significant factor in retarding bullet acceleration than rifling engravement is.
This minor difference results in modest and meaningless increases in engravement force and bullet-to-bore friction.
"It can take me from half an hour to four hours to complete one engravement
, but I love doing it.
and decorations on the wood used in the mosque have been done according to the local style, called the Swati style, and is an example of Pakhtun craftsmanship.
The Palestinian Minister expressed his appreciation and said that Sultan Qaboos Grand Mosque is really a masterpiece and it is a remarkable religious, art and Islamic achievement as it contains Islamic patterns and engravements
and many facilities and it is one of the Islamic symbols.