On this basis it carries on the structural design calculation of the new anti-gas pump.
在此基础上进行防气泵的结构设计计算。
2
Purchased key Labor Protection Articles, such as safety Helmet, Anti-gas Aspirators must have label of safety assessment.
所采购的关键劳动防护用品如安全帽、防毒口罩等必须有安鉴字样的标签。
3
The structure and working principle of the instrument as well as the method of evaluating anti-gas channeling ability of the slurry have been patented.