This authorization we production equipment and protection system component, in potential explosive gas environment use.
此授权我们生产设备和保护系统的组成部分，在潜在爆炸性气体环境中使用。
2
These experiments have proved that, for the coal dust with high ash component, after multiple actions by shock wave, it's explosive characteristic has been greatly increased.
试验结果表明，对于高灰分煤尘，在冲击波的多次冲击下煤尘的爆炸特性明显增强，危险性大大增加。
3
The three-dimensional discrete component process is applied to study the propagation course of explosive wave in rock.