| 摘要 |
PURPOSE:To reduce the weight of a grid without increasing the resistance of a plate by increasing the space between adjacent grid bones as they become distant from the top of the grid. CONSTITUTION:The total number of horizontal grid bones 6 (including frame bones) of a grid, the upper end of which is provided with a lag 5, is represented by T. Each horizontal grid bone 6 is located so that the space between the lowest frame bone and a grid bone number Q from the top frame bone equals DQ, which is given according to the equation. In the equation, T represents the number of the horizontal grid bones 6; Q represents the grid bone number from the top of the grid. |
