1. 棱锥台的翻译
1. truncated pyramid：直线line straight line | 棱锥台truncated pyramid | 重影coincidence of projection
2. 棱锥台
2. frustum of a pyramid：frustum of a cone截头圆锥 | frustum of a pyramid棱锥台 | full sectional view全剖视图
1. 加热系统中加热套和保温棉做成一体，加热套的功率应充分利用；进料系统中，进料斗的形状由倒置的四棱锥台改为倒置的圆锥台，可以防止死角的出现，增加进料量；液压系统结合实际运行情况，用行程开关替代压力继电器来控制预压冲杆是否到位，可以及时发现预压室是否有堵塞情况，以便采取相应措施。
In the heating system, the heating cover and the heating preservation cotton should be made a body, the power of the heating cover shoulde be used adequately. In the feeding-in system, the shape of the feeding-in facility changes headstand four-pyramid by the headstand cone, it may prevent the appearance of the dead angle and increase the feeding-in quantity. In the hydraulic system, uniting the actual movement situation, the limit switch may be used to control whether the precompression rammer arrives the right position instead of the pressure switch, and we can promptly discovere whether the precompression room exists stopping-up situation and take the corresponding measure.