years a steady stream of iron, steel, and copper to cast cannon in Manila, as well as the ammunition to go with these weapons, and also large quantities of ready-made gunpowder as well as the most important ingredients to make ... RH Hesselink - Brill 被引量: 0发表: 2015年 ...
Potassium nitrate is best known as the oxidizing agent in old fashioned "black powder" gunpowder, which is 75% potassium nitrate by weight. The other ingredients are 15% charcoal, and 10% sulfur. But potassium nitrate is also used in toothpastes to make teeth less sensitive to pain. As ...
Cheese is easiest to cut when it’s cold. Use a clean sharp knife to cut the cheese. Cut rectangular, square, and cylindrical cheese into slices. Cheese can also be cut into cubes. Use a serrated cutter to make attractive crinkle cut shapes. If you’re preparing a snack tray, try cutt...