某场平土石方深孔爆破施工期间，恰逢爆破器材价格上涨，如何节约爆破成本是此工程面临的主要问题。
In the construction period of some flat earthwork deep hole blasting, the price of blasting materials was rising, so how to save the cost was the main problem faced the project.
实验结果表明，用本文公式计算孔槽型平膜片的爆破压力，完全符合工程要求。
Experiments showed that the bursting pressure of hole-slot flat rupture discs calculated by the formula well met the requirements of engineering.
用于平开铝门窗五金件安装孔槽的冲压；气动控制，工作稳定。
The machine is used for punch hardware holes of windows and doors and other holes or grooves in windows and doors.
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