炮座
1.A platform or mound of earth within a fort from which guns are fired over the parapet
2.Turret side armor and barbette armor would usually be hit at a more oblique angle, usually circa 30-45 degrees or more, though the very center of the barbette could be hit at near right angles.
3.Still, with eight 15 inch main guns in four turrets, substantial welded-armour protection and designed for a top speed of not less than 29 knots (she actually achieved a very impressive 30.1 knots in trials in the calmer waters of the Baltic), Bismarck was capable of engaging any enemy warship on at least equal terms.
6.In this paper, the problem of the interior ballistic design of the recoillessrifles is solved by using "ballistic functions" and the methed of solutionfor the minimum bore volume is presented.
7.Following advances are adopted in the design of No. 4 blast furnace based on the production experiences obtained in the three existing blast furnaces of Baosteel:bell less top with central charging hopper, furnace hearth lined with small hot compressed carbon brick,furnace stack with integrated cooling stave,flattened cast house of steel structure without sand bedding,new type hydraulic clay gun and taphole opening machine,new INBA granulated slag treatment,AGS gas cleaning,etc.
