The tectonic subsidence is the main controlling factor in the foreland basin, which went through three periods, namely press, flexure subsidence to laxitas, uplift.
上扬子区在加里东运动过程中形成前陆盆地，主要经历了三次挤压、挠曲沉降至松驰、抬升过程。
2
In the press in the circuit board, the manufacture quantity of the film is a factor of key.
在电路板制印中，底片的制作质量是一个关键的因素。
3
The results show that the time of pressure building-up is a main factor affecting the forging number of press. This is a problem to take into account when designing a high-speed hydraulic press.