当板栅和具体的注入是完全的时候直井是地下避难室。
When the sheeting and concrete injection was complete the shaft was dug out.
本文探讨了小型铅蓄电池采用塑料板栅的可行性。
The Plastic grid of the Portable lead battery using ABS Plastic was studied.
这是因为压力铸造正板栅抗腐蚀性能较差造成的。
The resistance to corrosion is comparatively poor for pressure-casting grid.
各种铅酸性电池正负极拉网板栅及冲孔板栅。
All kinds of lead acid batteries are aligned pull screen grid and punching board gate.
各种铅酸性电池正负极拉网板栅及冲孔板栅。
All kinds of lead acid batteries are aligned pull screen grid and punching board gate.
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